216 Pressure Vacuum Switches 02.18-02img61.chem17.com/1/20160824/636076474729936886329.pdf · 2020....

1Registered Quality System to ISO 9001

Pressure and VacuumSwitches for ProcessApplications

Form 216

SOR Pressure Switchesare rugged field-mounted instruments. Thepressure sensing element of the SOR pressureswitch is a force-balance, piston-actuatedassembly. The sensing element is sealed by aflexible diaphragm and a static o-ring. A wideselection of wetted parts materials for mediacompatibility and containment are available. Ametal diaphragm may be welded to thepressure port for certain applications, therebyeliminating the o-ring.

Application InformationThe SOR pressure switches in this catalog aresuitable for a variety of process applications.Basic models with standard wetted parts arenormally suitable for air, oil, water and non-corrosive processes. See the Quick SelectionGuide on page 3. Specific applicationrequirements can normally be met by selectingoptional components, such as switchingelements, diaphragm systems and pressureports. See How to Order on page 3. Certainapplications may require customized specials.Consult the SOR representative in your area orthe factory.This catalog describes switches that are:• General Purpose• Weathertight• Conventional Explosion Proof

Other specific types of switches availablethrough your SOR representative are:• Hermetically Sealed (for hazardous

locations)• Pivot Seal (for high shock pressures

and cycle rates)• Differential Pressure• Temperature (remote and direct mount)• Electronic and Mechanical Level• Electronic Pressure

Design and specifications are subject tochange without notice.

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Registered Quality System to ISO 9001

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Features

Pressure and VacuumSwitches

Complete Product Line� Standard models and customized

specials cover pressure range from30 inches Hg VAC to 4000 psi.

Robust Construction� Rugged, high cycle rate tolerance, long

life, not critical to vibration, highoverrange and proof pressures, excellentcorrosion resistance to hostileenvironments.

Instrument Quality��High resolution of Set Points, high repeatability, narrow dead band, negligible temperature effect.

Wetted Parts� Wide selection materials, process

connection configurations and sizes.Optional “fire-safe” pressure sensor.

Snap-Action Electrical Switching� Wide selection UL Listed and CSA

Certified switching elements for AC andDC service. Optional “hermeticallysealed” capsule for hazardous and hostileenvironments.

Field Adjustable� Self-locking adjustment, no special tools

required. No-charge factory calibration.

Cost Effective� Simple and fast installation without

special tools, long service life, norequired periodic service or spareparts.

UL Listed, CSA Certified, CENELEC(BASEEFA & NEMKO) Certified,FM, JIS/RIIS Approved Models��Meets most code and customer requirements.

Built-In Quality� Rigid quality standards

maintained from raw material tofinished product.

Service��Factory sales engineers and area factory representatives provide effective and prompt worldwide service.

Delivery� Routine shipments 7 to 10 working

days. Emergency shipments via sameday air.

Warranty� 3 years from date of manufacture.

Note: Re-order items as shown.


Quick Selection GuideBasic SOR pressure switches with standard wetted parts are normally suitable for air, oil, waterand non-corrosive processes. The Quick Selection Guide on pages 4 and 5 shows these basicSOR type pressure and vacuum switches. Corrosive service and particular customerrequirements may require optional components. Refer to How to Order section below to build acustomized model number or the dedicated page to locate optional components, such asswitching elements, diaphragm systems, pressure ports and accessories. Each position in themodel number, except Accessories, must have a designator.

6NN-K5-M4-C2A-YYModel Number System

Piston Housing DiaphragmSwitchingElement

RangeSpring

Pressure Port Accessories

ApplicationsSOR pressure switches in this catalog are suitable for a wide variety of continuous pressureapplications. Specific application requirements can normally be met by selecting optionalcomponents, such as, switching elements, diaphragm systems and pressure ports. Certainapplications may require customized specials. Consult the SOR representative in your area orthe factory.

How to OrderInformation and data in this catalog are formatted to provide a convenient guide to assistinstrument engineers, plant engineers and end users in selecting pressure switches for theirunique applications.

Steps 1 through 5 are required. Step 6 is optional. Orders must have complete Model Numbers,i.e. each component must have a designator.

Step 1: Select Piston-Spring adjustable range/Set Point from Specifications(pages 7 & 8). (Piston/Spring combination determines adjustable range.)

Step 2: Select Housing for type of pressure switch and service (page 9).

Step 3: Select electrical Switching Element for electrical service (pages 10 & 11).

Step 4: Select Diaphragm and O-Ring for process compatibility and containment(pages 12 & 13).

Step 5: Select Pressure Port for process compatibility and connection (page 14).

Step 6: Select Accessories required for service (page 16).

How to Order



Pressure and VacuumSwitches Quick Selection Guide - Pressure

Explosion ProofWeathertight

Basic SOR pressure switches with standard wetted parts are normally suitable for air, oil, water andnon-corrosive processes. Corrosive service and particular customer requirements may require optionalcomponents. Refer to How to Order on page 3 to locate optional components, such as, housing, switchingelements, diaphragm systems, pressure ports and accessories. Each position in the model number, exceptAccessories, must have a designator.

Weathertight Explosion Proof

Standard Construction

• Housing: NN - aluminum; L - cast iron• Switching Element: SPDT; N - 10 amps @

250 VAC; K - 15 amps @ 250 VAC• Diaphragm & O-ring: N4 - primary (wetted)

diaphragm, TCP; o-ring (wetted) Buna-N• Pressure Port: 1/4” NPT(F); B1A - aluminum;

F1A - carbon steel.

Notes1. See balance of catalog for construction options.2. Dead band values are expressed as typical

expected at mid-range for a particular modelnumber. See dead band considerations on page 8.

3. Design and specifications subject to changewithout notice.

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Pressure and VacuumSwitches Quick Selection Guide - Pressure

Standard Construction

• Housing: NN - aluminum; L - cast iron• Switching Element: SPDT; K - 15 amps @

250 VAC• Diaphragm & O-ring: N4 - primary (wetted)

diaphragm, TCP; o-ring (wetted) Buna-N• Pressure Port: 1/4” NPT(F); B1A - aluminum;

F1A - carbon steel.




Proof 400 (psi) 1000

2500

Weathertight

Proof 2500 (psi) 6000

6000

Explosion Proof

Explosion ProofWeathertight

Standard Construction• Housing: NN - aluminum; L - cast iron• Switching Element: SPDT; K - 15 amps @

250 VAC• Diaphragm & O-ring: N4 - primary (wetted)

diaphragm, TCP; o-ring (wetted) Buna-N. Piston56 primary (wetted) diaphragm, 316SS.

• Pressure Port: 1/4” NPT(F); B1A - aluminum;F1A - carbon steel.




Quick Selection Guide - Vacuum

Piston 6, 5 9 1

Overrange 1500 (psi) 2500 5000

Piston 5254

56

Overrange 200 (psi) 750 1500


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A1F-4N-5K-NN6 081ot02 4.1 A1F-4N-5K-L6

A1F-4N-54K-NN6 572ot52 9.1 A1F-4N-54K-L6

A1F-4N-3K-NN5 042ot52 2.2 A1F-4N-3K-L5

A1F-4N-5K-NN5 573ot53 1.3 A1F-4N-5K-L5

A1F-4N-54K-NN5 055ot54 9.3 A1F-4N-54K-L5

A1F-4N-4K-NN9 005ot001 3.5 A1F-4N-4K-L9

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Pressure SwitchA bi-stable electromechanical device thatactuates/deactuates one or more electricalswitching element(s) at a predetermineddiscrete pressure/vacuum (Set Point) uponrising or falling pressure/vacuum.

Adjustable RangeThe span of pressure between upper and lowerlimits within which the pressure switch can beadjusted to actuate/deactuate. It is expressedfor increasing pressure.

Set PointThat discrete pressure at which the pressureswitch is adjusted to actuate/deactuate onrising or falling pressure. It must fall within theadjustable range and be called out asincreasing or decreasing pressure.

Dead BandThe difference in pressure between theincreasing Set Point and the decreasing SetPoint. It is expressed as typical, which is anaverage with the increasing Set Point at midrange for a pressure switch with the standardK switching element. It is normally fixed(non-adjustable).

Fire-SafeThe ability of a welded seal pressure sensor tocontain the process at elevated temperaturesup to 1200°F at the rated overrange pressure,unsupported by the body of the pressureswitch.

Hermetically SealedA welded steel capsule with glass-to-metal,factory-sealed electrical leads that isolates theelectrical switching element(s) from theenvironment.

OverrangeThe maximum input pressure that can becontinuously applied to the pressure switchwithout causing permanent change of SetPoint, leakage or material failure.

Pressure and VacuumSwitches Glossary of Terms

SOR recognizes that there is no industry convention with respect to terminology and definitionspertinent to pressure switches. This glossary applies to SOR pressure switches.

Proof PressureThe maximum input pressure that can becontinuously applied to the pressure switchwithout causing leakage or catastrophicmaterial failure. Permanent change of SetPoints may occur, or the device may berendered inoperative.

RepeatabilityThe ability of a pressure switch to successivelyoperate at a Set Point that is approached froma starting point in the same direction andreturns to the starting point over threeconsecutive cycles to establish a pressureprofile. Repeatability on SOR switches will besmaller than 1% of full scale perISA/ANSI S51.1.

SPDT Switching ElementSingle-Pole, Double Throw (SPDT) has threeconnections: C — Common, NO — NormallyOpen and NC — Normally Closed, which allowsthe switching element to be electricallyconnected to the circuit in either NO orNC state.

DPDT Switching ElementDPDT is two synchronized SPDT switchingelements which actuate together at increasingSet Point and deactuate together at decreasingSet Point. Discrete SPDT switching elementsallow two independent circuits to be switched;i.e., one AC and one DC.

The synchronization linkage is factory set, andis not field adjustable. Synchronization isverified by connecting test lamps to theswitching elements and observing them go“On” simultaneously at actuation and “Off”simultaneously at deactuation.


Pressure and VacuumSwitches Step 1: Piston/Spring

6NN-K5-M4-C2A-YY

This table is a listing of piston-spring combinations and the corresponding adjustable ranges, dead bands,overrange and proof pressures. Adjustable range is expressed for increasing pressure; the Set Point must bewithin the adjustable range. Dead band is expressed as typical. See dead band considerations at the bottomof switching element page 8.

1. Dead band values are expressed as typicalexpected at mid-range with the standard Kswitching element assembly installed. Whenoptional switching elements are specified,corresponding dead band multipliers shown onpages 8 and 10 must be applied.

2. The 12/66 piston/spring combination isavailable with the N switching element only.

3. Adjustable range becomes 10 to 45 in. wcwhenever switching elements other than K, KA,Wor D are used.

4. Special ranges may be possible. Consult thefactory or the SOR representative in your area.

5. Diaphragms may have an additional effect ondead band. See page 12.

6. Diaphragm life may be limited by using T or Hswitching elements with Numbers 1 and9 pistons.

7. Metric bar (mbar) values are practicalequivalents of the reference English values; notnecessarily exact mathematical conversions.This data appears on the product nameplatewhen metric engineering units are specified.

8. A breather drain (Accessory KK, see page 16)should be specified when low pressureadjustable ranges are used in environmentswith significant ambient temperature changes.

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Pressure and VacuumSwitches Step 1: Piston/Spring

This table is a listing of piston–spring combinations and the corresponding adjustable ranges, dead bands,overrange and proof pressures. SOR vacuum switches are compound; they will operate in either vacuum orpressure modes. Adjustable range is expressed from maximum vacuum decreasing to zero gauge andincreasing to maximum pressure. Dead band is expressed as typical. See dead band considerations below.The Set Point must be within the adjustable range. A vacuum switch is generally better suited than a pressureswitch for Set Points very near zero gauge.

Notes1. Dead band values are expressed as typical

expected at mid-range with the standard Kswitching element assembly installed. Whenoptional switching elements are specified,corresponding dead band multipliers shownbelow must be applied.

2. Special ranges may be possible. Consult thefactory or the SOR representative in your area.

3. Diaphragms may have an additional effecton dead band. See page 12.

4. Metric bar (mbar) values are practicalequivalents of the reference English values;not necessarily exact mathematical conversions.This data appears on the product nameplate whenmetric engineering units are specified.

1. Dead band values are expressed as typical expected at mid-adjustable range using the standard K switching element. Whenoptional switching elements are specified, corresponding deadband multipliers must be applied.

2. Dead bands are fixed (non-adjustable), except when T or Hswitching elements are used.

3. Dead band can be adjustable by selecting T or H switchingelement. (Diaphragm life may be limited when used withNumbers 1 and 9 pistons.)

4. Dead band multipliers must be applied to the typical dead bandvalue shown for piston-spring combination in specifications,pages 7 and 8, whenever optional switching elements otherthan K, KA or W are used.

5. Dead band can be widened by selecting an optional switchingelement with a multiplier greater than 1.0.Example: Model 6NN-G5-M4-C2A-YY

Typical Dead Band 1.2 psiG-Switching Element multiplier = 3Corrected Typical Dead Band 1.2 x 3 = 3.6 psi

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UL Listed Class I, Group C & D;Class II, Group E, F, G; Division1 & 2as an outlet box onlyElectrical: 3/4” NPT(F)-RightMaterial: Cast IronWeathertight with Option CGSee Switching Element Groups 1, 3below.

*L

Ul Listed Class I, Group C & D;Class II, Group E, F, G; Division 1 & 2as an outlet box onlyElectrical: 3/4” NPT(F)-Left, Right,TopMaterial: Cast IronWeathertight with Option CGSee Switching Element Groups 1,3, 6 below.

*S

UL Listed Class I, Group C & D; Class II,Group E, F, G; Division 1 & 2 as anoutlet box onlyElectrical: 3/4” NPT(F)-RightSix-place compression type terminalblock with Option LLMaterial: Copper-free aluminumWeathertightSee Switching Element Groups 1, 2, 3,4 below.

UL Listed Class I, Group C, D; Class II,Group E, F, G; Division 1 & 2 as anoutlet box onlyElectrical: 3/4” NPT(F)-Right, Left, TopSix-place compression type terminalblock with Option LLMaterial: Copper-free aluminumWeathertightSee Switching Element Groups 1, 2, 3,4, 6 below.

*SC

Separate electrical and set pointadjustment compartments.WeathertightSix-place compression type terminalblock UL Listed with WV option seepages 17 & 18CENELEC/BASEEFA with CL optionsee page 18CSA Certified with CS option seepages 17 & 18

*B3

*LC

Conventional Explosion Proof

*TA

Class I, Group A, B, C, D; Class II,Group E, F, G; Division 1 & 2 as anoutlet box onlyElectrical: 3/4” NPT(F)-Left, Right,TopMaterial (Housing): Cast IronMaterial (Cover): AluminumLine Mounted. Weathertight withOption CG. See Switching ElementGroups 1, 3 below.

Separate electrical and set pointadjustment compartments.Six-place compression type terminalblock. Explosion Proof IIB-T4.Material: AluminumRight hand electrical outlet:PF 3/4” (F)See Switching Element Groups 1, 2, 3,4 below.

*J4

Electrical: 3/4” NPT(F)-Left, RightMaterial: Aluminum

Electrical: M20 x 1.5-Left, RightMaterial: Aluminum*B4

*B5

Electrical: 3/4” NPT(F)-Left, RightMaterial: Cast Iron

Electrical: M20 x 1.5-Left, RightMaterial: Cast Iron

*B6

Switching Element Groups 1, 2, 3, 4, 5 below.

General Purpose NEMA 1

Weathertight NEMA 4, 4X, IP65

PP

Electrical: 3/4” NPT(F)-RightMaterial: AluminumSee Agency Listings pages 17 & 18See Switching Element Groups1, 2, 3, 4 below

Electrical: 3/4” NPT(F)-RightMaterial: AluminumSee Agency Listings pages 17 & 18See Switching Element Groups1, 2, 3, 4 below.NN

Electrical: 3/4” NPT(F)-RightMaterial: Carbon SteelSee Switching ElementGroups 1, 3 below.N6

Electrical: 3/4” NPT(F)-Left, RightMaterial: AluminumSee Switching Element Groups1, 2, 3, 4 below.P3

Electrical: Exposed contactsMaterial: AluminumOpen bracket with exposed switchingelement-does not meet NEMA 1See Switching Element Groups 1, 3below.

H3

Electrical: 3/4” NPT(F)-Left, RightMaterial: AluminumSee Agency Listings pages 17 & 18See Switching Element Groups1, 2, 3, 4 below.N3

Electrical- RN: 3/4” NPT(F)-RightElectrical- RM: M20 x 1.5-RightSix-place compression typeterminal blockMaterial: AluminumSee Agency Listings pages 17 & 18See Switching Element Groups1, 2, 3, 4, 5 below.

Electrical: 3/4” NPT(F)-RightMaterial: AluminumCover: Heavy Duty with Viton gasketSee Agency Listings pages17 & 18See Switching Element Groups1, 2, 3, 4 below.N4

Electrical- RT: 3/4” NPT(F)-RightElectrical- RS: M20 x 1.5-RightSix-place compression typeterminal blockMaterial: 316SSSee Agency Listings pages 17 & 18See Switching Element Groups1, 2, 3, 4, 5 below.

Electrical: 3/4” NPT(F)-RightManual reset onlySix-place compression typeterminal blockMaterial: AluminumSee Agency Listings pages 17 & 18See Switching Element Group 6 below.

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Pressure and VacuumSwitches Step 2: Housing

Switching ElementGroup/Housing

Compatibility

Group 1A, AA, B, BB,

BD*, C*, CA* E,EE, G, J, JJ, K,

KA, L, N,S, W, Y

GG, KK,LL, YY

Group 2 Group 3 Group 4 Group 5 Group 6

T H AF, AG, EF,EG, JF, JG

D, M

*BD only available with RN, RT housings*C micro switch is not available in L, S and TA housings.*CA micro switch only available in PP, NN, N3 and N4 housings

6NN-K5-M4-C2A-YY

*Not recommended for direct mount where vibration is expected. Housing should be securely mounted to a flat surface (bulkhead or panel rack) or pipe stanchion.** Consult factory.


Pressure and VacuumSwitches Step 3: Switching Element

6NN-K5-M4-C2A-YY

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Pressure and VacuumSwitches Step 3: Switching Element

6NN-K5-M4-C2A-YY

Notes1. Double switching elements have wire leads

except when supplied in housings RB, RM,RN, RS, RT, B3, B4, B5, B6 and J4. Terminalblocks are standard in these housings.

2. Dead band multipliers must be applied to thetypical dead band figures given in thespecification tables on pages 7 and 8.

3. Switching element ambient temperaturelimits:-65 to 400oF (-54 to 200oC) B, Y, W-65 to 250oF (-54 to 120oC) A, E, & J-40 to 167oF (-40 to 75oC) AF, AG,

EF, EG,JF, JG

-13 to 158oF (-25 to 70oC) BD-65 to 180oF (-54 to 80oC) All others

4. The hermetically sealed switching elementcapsule is UL Listed, CSA Certified andSAA Approved as an explosion proof snapswitch according to the following table withconditions and exceptions specified inNote 3.

5. Switching elements W, & Y have Elgiloysprings.

6. Certain switching elements can handlegreater voltage and/or amperage. Consultthe factory should your requirements exceedcatalog values. All switching elementsabove except BD are UL Recognized andCSA Certified. The DC current ratingsmarked with an asterisk (*) are not UL Listedbut have been verified by testing and/orexperience.

7. Use of BD switching elements may allowcertain weathertight housings to be used inflammable or hazardous atmospheres.Contact the factory for details. SeeNEMKO/CENELEC block under AgencyListings on page 18.

CAUTION: The switching element assemblyhas been precisly positioned in the housing atthe factory for optimum performance. Anyinadvertent movement or replacement in thefield will degrade performance, could renderthe device inoperative, and can void thewarranty unless factory authorized proceduresare followed.

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Pressure and VacuumSwitches Step 4: Diaphragm & O-ring

6NN-K5-M4-C2A-YY

Notes1. N4 diaphragm system is standard, but requires

a designator in the model number. It is normallysuitable for air, oil, water and noncorrosiveprocesses. M2 diaphragm system is standardon Number 56 vacuum switches. (See notes10 & 13.)

2. U7 designates a welded flush-type diaphragm.Available only in 1" NPT(M) 316SS onNumbers 5 & 6 pistons with K switchingelement. See page 15.

3. U8 designates the welded fire-safe diaphragmsystem. 316SS is stocked. Not available onNumber 1 piston or vacuum switches.Example: U8-C2A is a 316SS fire-safe weldeddiaphragm system. See page 15.

4. U9 designates a welded diaphragm system.Not available on vacuum switches.Example: U9-A1A is a Monel weldeddiaphragm system. See page 15.

5. Other diaphragm and o-ring combinations maybe available. Consult the factory or the SORrepresentative in your area for moreinformation.

6. Wetted parts have been selected asrepresenting the most suitable commerciallyavailable material for use in the serviceintended. However, they do not constitute aguarantee against corrosion or permeation,since processes vary from plant to plant andconcentration of harmful fluids, gases or solidsvary from time to time in a given process.Empirical experience by users should be thefinal guide. Alternate materials based on thisare generally available.

(Continued on page 13.)

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Pressure and VacuumSwitches Step 4: Diaphragm & O-Ring

6NN-K5-M4-C2A-YY

7. N3 diaphragm system utilizes a durableback-up diaphragm for high cycle-rate, highshock applications where Buna-N and TCP arecompatible with the process. Consult factory ifprocess temperatures are well below freezing.

8. This table shows allowable minimum andmaximum temperatures for o-rings. Consult thefactory for temperatures down to –65°F onfire- safe and welded metal diaphragmsystems.

9. Dead bands are slightly higher when usingH, J4, J6, N3, N6, U or W series diaphragmoptions. Consult factory.

10. Diaphragm systems N1, N3, N4, N5, N6, N7,N8, P1, R1, S1, S2, W2, W4, W5, W6, Y1,U8, U9 are not available on Number 56vacuum switches.

11. M9 diaphragm system is suggested for steamapplications up to 400°F.

12. If Kalrez, EPR or Viton is selected for hightemperature process media or ambienttemperature requirements, the A, B, E, J, W orY switching elements are suggested withreference to the table in Note 3, page 11.

13. Only diaphragm systems N1, N4, N5, N7, N8and P1 are available on the 12-66 piston-spring combination.

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Pressure and VacuumSwitches Step 5: Pressure Port

6NN-K5-M4-C2A-YY

Notes1. Select designators for material and connection

size. Large bold-face letters denote those itemsgenerally available from stock. Small light-faceletters denote items with limited stock andpossible long delivery.

2. 1/4” and 1/2" tapered BSP(F) pressure ports areavailable.

3. Combinations are possible when a particularconnection size is not available for the range(piston/spring) desired. For example, if 1” NPT(F)is desired for a Number 4 piston, the Number 12pressure port can be supplied. The piston wouldbe designated as Number 124 and the overrangeand proof pressures for Number 12 apply. Note:124, 125 and 126 are the only availablecombinations.

4. Many other materials such as PVC, Kynar, etc.,are available. Denote materials not shown byspecifying an X followed by the required

connection size, and describe the material.Examples:X2A = PVC pressure port with 1/2" NPT(F)connection.X1A = Titanium pressure port with 1/4" NPT(F)connection.Non-metal pressure ports generally reduce proofpressure and may reduce overrange pressure. Thepressure port material may limit the processtemperature. Delivery may be longer than normal.

5. Raised-face and flat-face flanges to match ASA150 and ASA 300 lb. in commercially availablematerials can be supplied on Series 12 and 4pistons by adding an X suffix to the modelnumbers and specifying “X - (size) inch (material)(raised- or flat-) face flange to match ASA(rating) lb.”

6. Brass not available on Piston Numbers 9 and 1.7. 1/4” NPT(F) Flushing Port standard on C6A

pressure ports.

*C4A only available with Pistons 5 & 6 when U7 diaphragm is specified. See page 15.

See next page for presentation of welded diaphragm and FM Approved fire-safe systems.

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Welded Diaphragm& Fire-Safe Systems

Welded Flush-Type Diaphragm SystemA metal diaphragm is welded to the process face of the pressure port, thereby,eliminating the o-ring. This arrangement may be indicated for viscous or slurryprocess where cleanliness is required or where process build-up and clogging isunacceptable.The pressure port designator determines the material: Only 1” NPT(M) 316SS isavailable.Example: U7-C4A

U7 = 316SS welded flush-type diaphragmC4A = 1” NPT(M) 316SS pressure port

Note: U7 is limited to Numbers 5 and 6 pistons and the K switching element. Not available on vacuum switches.

Fire-Safe Welded Diaphragm SystemFactory Mutual System Approved - U.S Patent Number 4,438,305Tested in flames at 1900oF for periods up to 30 minutes while pressurized to therated overrange pressure.A metal diaphragm, the cylinder disc and the pressure port are welded as a unit,thereby, eliminating the o-ring. This arrangement may be indicated for extremelycorrosive, hot, harsh or volatile process where o-rings are not suitable. See fire-safe definition on page 6.316SS is stock. Hastolloy B and C, Monel and Titanium are available, but mayrequire a longer lead time. The pressure port designator determines the material.Example: U8-C2A

U8 = Fire-safe welded diaphragm systemC2A = 1/2” NPT(F) 316SS pressure port

Note: 1/2” NPT(F) is stocked; 1/4” NPT(F) is not stocked and has a longer leadtime. Not available on Number 1 piston and vacuum switches.

Welded Diaphragm SystemA metal diaphragm is welded to the pressure port, thereby, eliminating the o-ring.This arrangement may be indicated for extremely corrosive, hot or harsh processwhere o-rings are not suitable.316SS is stock. Hastelloy B and C, Monel and Titanium are available, but mayrequire a longer lead time. The pressure port designator determines the material.Example: U9 - A2A

U9 = Monel welded diaphragmA2A = 1/2” NPT(F) Monel pressure port

Note: Not available on vacuum switches.

Two-inch Pressure PortThe wide pressure port minimizes the possibility of clogging when the process media is sludgy orviscous. See page 20 for dimensions. A 2” NPT(F) pressure port with a 1/4” NPT(F) flushing portcan be supplied with a welded diaphragm, or with a conventional diaphragm and o-ringcombination.

Designator Description

ProcessConnection

ProcessFace

PistonShaft

SpringStop

CylinderDisc

Diaphragm

Pressure Port

Diaphragm

PressurePort

U7

U8

U9

C6A


Pressure and VacuumSwitches Step 6: Accessories

6NN-K5-M4-C2A-YY

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SOR Pressure Switches in this catalog may be specified withmanual reset electrical switching elements D or M. D actuatesautomatically on increasing pressure. M actuates automaticallyon decreasing pressure. Depress the button to manually reset.Housings must be RB (weathertight) or S (explosion proof)because of the requirement of a hub for the manual resetassembly. Refer to page 3 for order instructions.

Shipping Weights

Manual Reset Button

RB - Weathertight S - Explosion Proof

Pressure and VacuumSwitches Manual Reset

Actual shipping weights may vary from thecharted values because of product material,configuration and packaging requirements.

NotePK Pipe Kit adds approximately 1.5 lbs(0.7 kgs). TB Junction box addsapproximately 5 lbs (2.25 kgs).

DimensionsDimensions in this catalog are for reference only. They may be changed without notice. Contact the factoryfor certified drawings for a particular model number.Notes: 1. Dimensions in this catalog are expressed as millimeters over inches (Linear = mm/in.).

2. Dimensions marked with an asterisk (*) on housing dimension drawings (pages 20through 31) vary with respect to process connection size. The chart below lists thesedimension variances.

3. Electrical Connection Size: 3/4” NPT(F) standard. 1/2” NPT(F), 1/2” NPT(M), M20 x 1.5,PG 13.5, PF 3/4” optional. Consult the factory for compatibility with selected housing oragency listing.

gnisuoH )sbl(thgieW )sgk(3H 5.1 57.0

3P,PP,FP,4N,3N,NN 2 1

NR,MR,BR 2 5. 52.1

6N 3 1 5.

CS,CL 4 2

S,L 5 2 5.

AT 6 3

SR,TR,4J,4B,3B 8 4

6B,5B 01 5

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25,21 45,4 65,1,9,5,6

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)F(TPN"2/1 nwohS nwohSddA 2.31

25.0

)M(TPN"4/3 - -ddA 1.32

19.0

)F(TPN"1ddA 6.5

22.0- -

)M(TPN"1 -ddA 0.64

18.1-

)F(TPN"2ddA 4.52

00.1- -


Pressure and VacuumSwitches Dimensions

Dimensions in this catalog are for reference only. They may be changed without notice. Contact the factoryfor certified drawings for a particular model number.

Wide Pressure Port: C6ASee description on page 15.

Pipe Mounting Kit: PK

107.24.22

69.92.75

174.26.86

33.31.31

82.63.25

49.31.94

7.1 WD. X 13.5 LG .28 .53 Slot (Typical 2)

Electrical Connection3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)

28.71.13

26.21.03

40.41.59

7.1.28

∅∅∅∅∅94.5 3.72

Process Connection2” NPT(F)

*Dimension shown is approximate and based on a 5-thread engagement.

141.25.56 70.6

2.78(Typical) 7.9 Diameter

0.31 (2 Places)

7.853.09

(Typical)

*167.16.58

93.73.69

22.40.889.9

0.39

3/4” NPT(F)Electrical

Connection(3 Places)

Switch MountingHoles (Typical 4)

Holes for 5/16”Diameter MountingHardwareFurnished withU-Bolts for Mountingto 1-1/2” to 2” Pipe.

11.90.47

71.42.81

95.33.75

71.42.81

31.01.22

133.45.25

50.82.00

Pipe(Reference)

7.40.29

40.51.59

PressurePort Side

C SwitchMounting HolesL

3/4” NPT(M) Close Nipple Attached toStandard 3/4” NPT(F) Electrical Connection

PerpendicularMounting

ParallelMounting

Junction Box with TerminalBlock: TB


Designators: NN, N3, N4, PP, PF, P3Piston Numbers 4, 54Housings PP, P3 and PF are General Purpose.(Cover gasket is not installed.)

Designators: RM, RN, RS, RTPiston Numbers 4, 54



Designators: NN, N3, N4, PP, PF, P3Piston Numbers 12, 52

Designators: RM, RN, RS, RTPiston Numbers 12, 52

Weathertight - NEMA 4, 4X, IP65


(Both Sides on N3 & P3Housings)

69.92.75

33.31.31

*148.85.86

**57.2 2.25

107.24.22

49.31.94

56.62.23 28.7

1.13

40.41.59

26.21.03

Clearance Slots for 6.4

.25

Hardware with 63.5

Minimum to

2.50 76.2

3.00

Mounting Centers

Process Connection

ProcessConnection

7.1.28

Electrical Connection

*(See Chart Below)

107.24.22

69.82.75

49.31.94

33.31.31

*174.26.86

*57.22.25

Process Connection

28.71.13

26.31.03

7.10.28

∅ 94.5 3.72

3/4” NPT(F)(Standard)1/2” NPT(F)(OptionalElectrical ConnectionOptional on RNand RT Housings

Electrical Connection*(See Chart)


(Both Sides onN3 & P3 Housings)

69.92.75

33.31.31

*148.85.86

**57.2 2.25

107.24.22

49.31.94

56.62.23 28.7

1.13

40.41.59

26.21.03


0.25

Hardware with 63.5

Minimum to 76.2

2.50

3.00

Maximum Mounting Centers

Process ConnectionProcessConnection

7.1.28 *57.2

2.25

107.24.22

69.82.75

49.31.94

33.31.31

Process Connection

65.82.59

28.71.13

40.41.59

7.1.28

3/4” NPT(F)(Standard)1/2” NPT(F)Electrical ConnectionOptional on RNand RT Housings

*174.26.86

26.31.03

ProcessConnection


0.25

Hardware with 63.5

Minimum to 76.2

2.50

3.00



0.25

Hardware with 63.5

Minimum to

2.50

76.2

3.00


Housings PP, P3 and PF are General Purpose.(Cover gasket is not installed.)

*Refer to Dimensions table on page 19 for changes in length due to process connection size.

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Designators: NN, N3, N4, PP, PF, P3Piston Numbers 5, 6, 1, 9, 56

Designators: RM, RN, RS, RTPiston Numbers 5, 6, 1, 9, 56



(Both Sides onN3 & P3 Housings)

69.92.75

33.31.31

*146.35.76

*54.62.15

107.24.22

49.31.94

56.62.23 28.7

1.13

40.41.59

26.21.03

Process Connection

ProcessConnection

7.1.28

*54.62.15

107.24.22

69.82.75

49.31.94

33.31.31

Process Connection

65.82.59

40.41.59

7.1.28

3/4” NPT(F)(Standard)1/2” NPT(F)ElectricalConnectionOptional on RNand RT Housings

*171.7 6.86

26.31.03

ProcessConnection

ElectricalConnection

*(See Chart Below)

28.71.13


0.25

Hardware with 63.5

Minimum

to

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3.00



0.25

Hardware with 63.5

Minimum

to

2.50 76.2

3.00


Housing PP, P3 and PF are General Purpose.(Cover gasket is not installed.)

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Designators: H3Piston Numbers 4, 54

Designators: N6Piston Numbers 4, 54



Designators: H3Piston Numbers 12, 52

Designators: N6Piston Numbers 12, 52

Open Bracket

7.1.28

Diameter

Mounting Holes(Typical 2)

66.82.63

50.82.00 20.6

.81

*∅ 95.4 3.74

*156.5 6.16

*91.23.59

18.8.74

ProcessConnection

14.2.56

101.64.00

54.42.14

31.81.25

*∅ 94.5 3.72

*151.65.97

*61.52.42

28.21.11


17.5.69

63.52.50

5.8.23

ProcessConnection

101.64.00

54.42.14

31.81.25

*∅ 54.9 2.18

*127.85.03

*61.52.42

8.4.33


17.5.69

63.52.50

5.8.23

ProcessConnection

*151.65.97

27.41.08

*127.85.03

7.1.28

Diameter


47.21.86

7.1.28

Diameter



66.82.63

50.82.00 20.6

.81

*150.15.91

*91.23.59

14.2.56

ProcessConnection

28.41.12

55.92.20

7.1.28

Diameter






Designators: H3Piston Numbers 5, 6, 9, 1, 56

Designators: N6Piston Numbers 5, 6, 9, 1, 56


66.82.63

50.82.00 20.6

.81

*150.15.91

*91.23.59

14.2.56

ProcessConnection

28.41.12

101.64.00 54.4

2.1431.81.25

*125.24.93

*58.92.32

43.71.72


17.5.69

63.52.50

5.8.23

ProcessConnection55.9

2.20

*149.15.87

19.1.75

7.1.28

Diameter


7.1.28

Diameter


Open Bracket



Designators: LPiston Numbers 4, 54

Designators: SPiston Numbers 4, 54



Designators: LPiston Numbers 12, 52

Designators: SPiston Numbers 12, 52


137.25.40

71.12.80

80.83.18

(Typical)40.41.59

(Typical)

*181.17.13

*115.14.53

*74.72.94

Clearance for 6.4 .25Mounting Hardware

Process Connection

106.24.18 20.6

.816.4.25 26.7

1.05

142.55.61

Electrical Connections3/4” NPT(F) (Standard)1/2” NPT(F) (Optional)

ProcessConnection

*186.47.34

*115.14.53

*74.72.94

80.83.18

(Typical)40.41.59

(Typical)


Process Connection

20.6.816.4

.25


or Plugged (Optional)(Typical 3)

26.71.05106.2

4.08

71.12.80

137.25.40

71.12.80

80.83.18

(Typical)40.41.59

(Typical)

*181.17.13

*115.14.53

*74.72.94


Process Connection

86.43.40 20.6

.816.9.27 6.4

.25


ProcessConnection

142.55.61

*186.47.34

*115.14.53

*74.72.94

80.83.18

(Typical)40.41.59

(Typical)


Process Connection

20.6.816.4

.25


or Plugged (Optional)(Typical 3)

6.9.27

86.43.40

71.12.80





Designators: LPiston Numbers 5, 6, 9, 1, 56

Designators: SPiston Numbers 5, 6, 9, 1, 56


137.25.40

71.12.80

80.83.18

(Typical)40.41.59

(Typical)

*178.67.03

*112.54.43

*72.12.84


Process Connection

79.53.13 20.6

.816.4.25


ProcessConnection

142.55.61

*183.97.34

*112.54.43

*72.12.84

80.83.18

(Typical)40.41.59

(Typical)


Process Connection

79.53.13

6.4.25

Electrical Connections3/4” NPT(F) (Standard)1/2” NPT(F) (Optional)or plugged (Optional)Typical 3

71.12.80

20.6.81

ProcessConnection



Designators: LC, SCPiston Numbers 4, 54

Designators: TAPiston Numbers 4, 54



Designators: LC, SCPiston Numbers 12, 52

Designators: TAPiston Numbers 12, 52


108.04.25

(Typical)

*200.97.91

*121.44.78

*67.62.66

Process Connection

External GroundLug (Optional)Typical 2 Places

104.94.13

8.640.34

Clearance for 6.4

.25Mounting Bolts

54.12.13

(Typical)

35.11.38

151.95.98

71.62.82

3/4” NPT(F)ElectricalConnection(Standard)1/2” NPT(F)(Optional)

141.25.56

*187.57.38

70.6 2.78(Typical)

78.53.09

(Typical) 39.41.55

*117.14.61

118.64.67 24.9

0.9822.40.88

9.9(Typical) 0.39

Process Connection

Electrical Connection3/4” NPT(F)(Standard)1/2” NPT(F) (Optional)

7.80.31

Diameter Mounting

Holes (Typical 2)

108.04.25

(Typical)

*200.97.91

*121.44.78 *67.6

2.66

Process Connection


Clearance for 6.4

.25Mounting Bolts

54.12.13

(Typical)

151.95.98

71.62.82


104.94.13

8.640.34

35.11.38

141.25.56

*187.57.38

70.6 2.78(Typical)

78.53.09

(Typical) 39.41.55

*117.14.61

98.83.89

5.10.20

22.40.88

9.90.39

(Typical)


7.80.31

Diameter Mounting

Holes (Typical 2)

Plugged

Plugged

SC shown. LC identical except right handelectrical connection only.

SC shown. LC identical exept right handelectrical connection only.

Process Connection





Designators: TAPiston Numbers 5, 6, 9, 1, 56

9.90.39

(Typical)



Designators: LS, SCPiston Numbers 5, 6, 9, 1, 56

108.04.25

(Typical)

*198.47.81

*118.94.68 *65.0

2.56

Process Connection


Clearance for 6.4

0.25Mounting Bolts

54.12.13

(Typical)

151.95.98

71.62.82


104.94.13

8.640.34

35.11.38

*185.27.29

70.6 2.78(Typical)

78.5 3.09

(Typical)

*114.84.52

93.73.69

22.40.88

Process Connection


7.80.31

Diameter Mounting

Holes (Typical 2)

Plugged

ProcessConnection

SC shown. LC identical exept right handelectrical connection only.

39.41.55

141.2 5.56


Designators: B3, B4, B5, B6, J4Piston Numbers 5, 6, 9, 1, 56



Designators: B3, B4, B5, B6, J4Piston Numbers 12, 52

Designators: B3, B4, B5, B6, J4Piston Numbers 4, 54

Explosion Proof

146.65.77

80.03.15

40.91.61

∅ ∅ ∅ ∅ ∅ 9.1 .36 Hole(Typical 2)

ProcessConnection

Vent Connection1/4” NPT(F) (LH & RH)

Process Connection

Electrical ConnectionB3 & B6 =

3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)B4 & B5 = M20 x 1.5

J4 = 3/4” PF(F)(RH only)

35.31.39

26.61.05

9.7.38

146.65.77

106.24.18

40.91.61

73.42.89

106.24.18

*122.44.82

33.51.32

108.04.25

80.03.15

73.42.89

40.11.58

*122.44.82

∅ ∅ ∅ ∅ ∅ 9.1 .36Hole

(Typical 2)

ProcessConnection


35.31.39

26.61.05

9.7.38

33.51.32

108.04.25

146.65.77

106.24.18

40.91.61

80.03.15 40.1

1.58

*120.04.72

∅ ∅ ∅ ∅ ∅ 9.7 .36Hole

(Typical 2)

ProcessConnection



3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)

B4 & B4=M20 x 1.5J4=3/4” PF(F)(RH only)

35.31.39

26.61.05

9.7.38

33.51.32

108.04.25

Process Connection

Process Connection

40.11.58

73.42.89



3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)B4 & B5 = M20 x 1.5

J4 = 3/4” PF(F)(RH only)


Designators: RB Manual ResetPiston Numbers 4, 54

Designators: S Manual ResetPiston Numbers 4, 54



Designators: RB Manual ResetPiston Numbers 12, 52

Designators: S Manual ResetPiston Numbers 12, 52

Conventional Explosion ProofWeathertight -NEMA 4, 4X, IP65

142.55.61

*74.72.94

71.12.80

*115.14.53

*211.38.23

107.24.22

*192.37.57

ProcessConnection

1/2” NPT(F) ElectricalConnection Optionalon RB, RH, RC & RGHousings

Process Connection


49.31.94

9.1.36

69.82.75 33.3

1.31

*57.22.25

∅ ∅ ∅ ∅ ∅ 94.5 3.72

40.41.59

7.10.28

26.31.03

28.71.13

65.82.59

Manual Reset


0.25

Hardware with 63.5

Minimum to

2.50

76.2 Maximum

3.00

Mounting Centers

40.41.59

(Typical)

80.83.18

(Typical)

Clearancefor 6.4 Mounting .25Hardware

Process Connection ProcessConnection

6.40.25

106.24.1820.6

0.81Electrical Connection3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)or Plugged (Optional)

Typical 2

107.24.22

*192.37.57

ProcessConnection


Process Connection


49.31.94

9.1.36

69.82.75

*57.22.25

40.41.59

7.10.28

26.31.03

28.71.13

65.82.59

Manual Reset


0.25

Hardware with 63.5

Minimum to

2.50

76.2 Maximum

3.00

142.55.61

*74.72.94

71.12.80

*115.14.53

*211.38.23

40.41.59

(Typical)

80.83.18

(Typical)

Clearancefor 6.4 Mounting .25Hardware

Process ConnectionProcess

Connection

6.40.25

86.13.39

20.60.81

Electrical Connection3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)or Plugged (Optional)

Typical 2

33.31.31





Designators: RB Manual ResetPiston Numbers 5, 6, 1, 9, 56

Designators: S Manual ResetPiston Numbers 5, 6, 1, 9, 56

142.55.61

*72.12.84

71.12.80

*112.54.43

*208.88.22

40.41.59

(Typical)

80.83.18

(Typical)

Clearance

for 6.4

Mounting .25Hardware

Process Connection ProcessConnection

6.40.25

79.53.93

20.60.81Electrical Connection

3/4” NPT(F)(Standard)1/2” NPT(F)(Optional)or Plugged (Optional)

Typical 2

107.24.22

*189.77.47

ProcessConnection


Process Connection


9.1.36

69.82.75 33.3

1.31

*54.62.15

40.41.59

7.10.28

26.31.03

28.71.13

65.82.59

Manual Reset


0.25

Hardware with 63.5

Minimum to

2.50

76.2 Maximum

3.00

Mounting Centers

Conventional Explosion ProofWeathertight -

NEMA 4, 4X, IP65

49.31.94



Process Instrumentation

SOR INC.14685 West 105th StreetLenexa, Kansas 66215

Phone 913-888-2630Toll Free 800-676-6794Fax 913-888-0767

www.sorinc.com

Registered Quality System to ISO 9001 Form 216 (08.02) Printed in U.S.A.

216 Pressure Vacuum Switches 02.18-02img61.chem17.com/1/20160824/636076474729936886329.pdf · 2020....

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