5 Willsmore Street, (PO Box 718) Williamstown Victoria 3016

T: (61 3) 9399 8444 F: (61 3) 9399 8446

E: sales@magriffith.com.au W: www.magriffith.com.au

Pressure Reducing ValvesResidential and Commercial Water Systems

• Model C150E

• 15mm to 50mm

• High Flow Rate

• No Pressure Creep

• Delivers Constant Pressure

• Watermark Lic. 21153• Model CF101• 65mm to 910mm• Ductile Iron

Note: Nut & Union are not supplied on Models over 25mm

FEATURES / BENEFITS• Highest Flow Rate in Industry• Replaceable acetal cartridge with integral stainless steel strainer• Built-in bypass prevents buildup of excessive system pressure caused by thermal expansion• Nylon reinforced Buna-N diaphragm• Balanced piston design• May be installed in any position• Short lay length makes for easy retrofit• For Hot & Cold Water• Serviceable in-line• Watermark Lic. 21153• DZR Brass Body

PRODUCT OPERATIONThe Danfoss Flomatic Pressure Reducing Valve (PRV) Model C150E when properly installed

will regulate high upstream (inlet pressure) to a lower regulated downstream (outlet pressure)* constant pressure within a range regardless of water flow. This is accomplished by an

adjustable spring loaded balancing valve factory set to automatically regulate the downstream pressure to 350 kPa. The regulating pressure is field adjustable.

* Max Reduction Ratio 4:1

PRODUCTION SPECIFICATION• Connection: BSP Female• Max Pressure: 2700 kPa• Max Temperature: 82°C

• Pressure Regulating Setting: Factory set to 350 kPa or 500 kPa

• Standard spring adjustment range: Valve sizes: 15mm thru 50mm: 105 to 1050 kPa

• Max Reduction Ratio 4:1

DIMENSIONS (mm)SIZE CONNECTIONS A B C D WEIGHT

1/2” Single Union 111 156 25 60 1.4 kg

3/4” Single Union 113 156 25 60 1.4 kg

1” Single Union 125 194 29 76 1.8 kg

1 1/4” Less Union 127 213 40 76 2.4 kg

1 1/2” Less Union 148 252 56 132 6.1 kg

2” Less Union 148 252 56 132 6.5 kg

ITEM / QUANTITY / DESCRIPTION / MATERIAL

HEAD LOSS CHARTS

Item # Qty. Description Material Item # Qty. Description Material

1 1 Adjusting Screw Steel 15 1 Large Washer Stainless Steel 18-8

2 1 *Spacer ABS 16 1 Stem Stainless Steel 304

3 1 Jam Nut Steel or Bronze 17 1 O-Ring Buna-n

4 1 Cover Noryl or 80833 18 1 Cartridge Delrin

5 1 Spring Bottom Steel 19 1 Disc Holder Stainless Steel 304

6 1 Spring Steel 20 1 Disc EPDN

7 1 HHCS Stainless Steel 18-8 21 1 Plastic Washer Delrin

8 1 Diaphragm Plate Steel 22 1 HHCS Stainless Steel 18-8

9 1 Tooth Lock Washer Steel 23 1 Small Washer Stainless Steel 18-8

10 1 O’Ring Buna-n 24 1 Body Bronze C89833

11 1 O’Ring Buna-n 25 1 Union Disc EPDM

12 1 Diaphragm Nitrile / Nylon 26 1 Union Hut Bronze C31400

13 1 Screen Stainless Steel 304 27 1 Union Bronze C31400

14 1 Friction Ring Brass C36000 - - - -

MATERIALS• Valve Body: Un-Leaded bronze - DZR Brass

• Valve bell housing: Composite (1/2”, 3/4”, 1” & 11/4”)

• Unleaded bronze (11/2” thru 2”)

• Spring & fasteners: Stainless steel

• Internal parts: Corrosion resistant

Note: Nuts & Tails not supplied

* On 1/2” - 1 1/4” only

FLOW RATE (lpm) FLOW RATE (lpm)

0 38 76 114 1510 189 379 568 757 946 1136

Reduce pressure to a distrib-utionsystem when supplyinggravity from a source with arelatively high elevation

Reduce pressure to a lowpressure zone when thesource is a high lift pump

Reduce pressure to a desirableoperating value within a industrialfacility when the municipal supplyis the sole source or when sup-plying emergency water to a plantwhich loses its primary source

Reduce pressure to alow pressure zonewhen a high pressurezone is the sole sourceor when makeup wateris required to supple-ment the normal supplyto the low pressurezone

Reduce pressure to thenozzles of an irrigatingsystem when the sourceis a high pressure boosterpump

Typical Applications

Pressure Reducing ValveModel CF101

The Model No. CF101 Pressure Reducing Valvecontrols and maintains a preset, reduced down-stream (outlet) pressure by causing the main valveto throttle and sustain the desired reduced pres-sure regardless of variations in demand andupstream (inlet) pressure.

The throttled position of the main valve is controlled by an adjustable pilot valve operating in conjunction with an orifice (or needle valve).

The pilot valve senses the downstream (outlet)pressure and reacts immediately to reposition itspiston as the outlet pressure tends to increase ordecrease with varying demand. The change in

throttled position of the pilot valve piston causes achange in flow of control water which in turn changes

the pressure above the diaphragm of the main valve,thereby causing the diaphragm assembly of the main

valve to reposition and throttle to maintain the desired,preset reduced outlet pressure.

Also Available InAngle Body Globe Style (CFA101)

A dual or compound valve installation is recom-mended when the normal and low flow require-ments are considerably lower than peak or fireflows. The smaller pressure reducing valve shouldbe sized to handle normal (maximum domestic)and low flows while the larger valve, which will bepreset for a reduced pressure 3 to 4 psi below thesetting of the smaller valve, should be sized to han-dle infrequent peak or fire flow requirements byitself or in conjunction with the smaller valve.

CF101 - Globe Style - StraightCFA101 - Angle Body Globe Style Max Pressure 1800 kPa

Max Temp 82ºCAdjustable Outlet Pressure, 100 kPa - 1000 kPaMax Reduction 4:1 Ratio

Size: 65mm - 910mm Flanged

Dual Valve

High Quality Valves Built to Last...

ComponentMaterial

Body

In order to insure pressure control and avoid excessive noise and maintenanceexpense, extreme care must be taken when sizing the throttling valve for aspecific application. Although both pressure conditions and flow (velocity) arecontributing factors, field experience has determined that flow rate is the mostcritical factor and that proper valve sizing can be attained through considerationof the flow rate alone.

& Cover Ductile Iron Ductile Iron Ductile Iron

IntermediateChamber Ductile Iron Ductile Iron Ductile Iron

Coating Fusion Epoxy Fusion Epoxy Fusion Epoxy

Spool &Diaphragm

PlateUnleaded

Bronze Ductile Iron Ductile Iron

Seat Ring &Seat Plate

UnleadedBronze

UnleadedBronze

StainlessSteel

Cover Bushing Bronze Bronze Bronze

Disc Seal Buna-N Buna-N Buna-N

Diaphragm Nitrile Nylon Nitrile Nylon Nitrile NylonStem, Nuts &

SpringStainless

SteelStainless

SteelStainless

Steel

Standard

Sizing Guide for Throtting Valves

Materials

Reduce pressure to a distrib-utionsystem when supplyinggravity from a source with arelatively high elevation

Reduce pressure to a lowpressure zone when thesource is a high lift pump

Reduce pressure to a desirableoperating value within a industrialfacility when the municipal supplyis the sole source or when sup-plying emergency water to a plantwhich loses its primary source

Reduce pressure to alow pressure zonewhen a high pressurezone is the sole sourceor when makeup wateris required to supple-ment the normal supplyto the low pressurezone

Reduce pressure to thenozzles of an irrigatingsystem when the sourceis a high pressure boosterpump

Typical Applications

Pressure Reducing ValveModel CF101

The Model No. CF101 Pressure Reducing Valvecontrols and maintains a preset, reduced down-stream (outlet) pressure by causing the main valveto throttle and sustain the desired reduced pres-sure regardless of variations in demand andupstream (inlet) pressure.

The throttled position of the main valve is controlled by an adjustable pilot valve operating in conjunction with an orifice (or needle valve).

The pilot valve senses the downstream (outlet)pressure and reacts immediately to reposition itspiston as the outlet pressure tends to increase ordecrease with varying demand. The change in

throttled position of the pilot valve piston causes achange in flow of control water which in turn changes

the pressure above the diaphragm of the main valve,thereby causing the diaphragm assembly of the main

valve to reposition and throttle to maintain the desired,preset reduced outlet pressure.

Also Available InAngle Body Globe Style (CFA101)

A dual or compound valve installation is recom-mended when the normal and low flow require-ments are considerably lower than peak or fireflows. The smaller pressure reducing valve shouldbe sized to handle normal (maximum domestic)and low flows while the larger valve, which will bepreset for a reduced pressure 3 to 4 psi below thesetting of the smaller valve, should be sized to han-dle infrequent peak or fire flow requirements byitself or in conjunction with the smaller valve.

CF101 - Globe Style - StraightCFA101 - Angle Body Globe Style Max Pressure 1800 kPa

Max Temp 82ºCAdjustable Outlet Pressure, 100 kPa - 1000 kPaMax Reduction 4:1 Ratio

Size: 65mm - 910mm Flanged

Dual Valve

High Quality Valves Built to Last...

ComponentMaterial

Body

In order to insure pressure control and avoid excessive noise and maintenanceexpense, extreme care must be taken when sizing the throttling valve for aspecific application. Although both pressure conditions and flow (velocity) arecontributing factors, field experience has determined that flow rate is the mostcritical factor and that proper valve sizing can be attained through considerationof the flow rate alone.

& Cover Ductile Iron Ductile Iron Ductile Iron

IntermediateChamber Ductile Iron Ductile Iron Ductile Iron

Coating Fusion Epoxy Fusion Epoxy Fusion Epoxy

Spool &Diaphragm

PlateUnleadedBronze Ductile Iron Ductile Iron

Seat Ring &Seat Plate

UnleadedBronze

UnleadedBronze

StainlessSteel

Cover Bushing Bronze Bronze Bronze

Disc Seal Buna-N Buna-N Buna-N

Diaphragm Nitrile Nylon Nitrile Nylon Nitrile NylonStem, Nuts &

SpringStainless

SteelStainless

SteelStainless

Steel

Standard

Sizing Guide for Throtting Valves

Materials

60mm Threaded80mm Threaded

60mm

80mm

100mm

150mm

200mm

250mm

300mm

350mm

410mm

510mm

610mm

760mm

910mm

N/A N/A 210 4 HEX N/A 140 90 170 N/A 30 N/A N/A 210 4 HEX N/A 140 90 170 N/A 30 270 205 215 180 90 140 95 170 15 30 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 275 210 220 190 95 140 95 170 20 31 300 220 N/A 205 100 N/A N/A 170 30 45 305 270 290 190 110 170 125 210 25 57 320 290 N/A 250 125 N/A N/A 210 30 79 410 330 N/A 270 130 N/A N/A 280 25 56 440 350 N/A 310 150 N/A N/A 280 35 167 525 430 N/A 335 165 N/A N/A 360 30 275 550 450 N/A 375 185 N/A N/A 360 40 325 660 550 N/A 390 190 N/A N/A 480 30 550 700 580 N/A 440 215 N/A N/A 480 45 600 760 670 N/A 475 230 N/A N/A 635 30 900 800 990 1030 890 770 N/A 590 290 N/A N/A 710 35 1151 930 1220 1260 1220 1265 1610 1650 1930 1980

The table below indicates the desired throttling valve size (mm) for designated maximum and minimum flow rates in litres per minute (LPM):

ValveBodyType

(Inch)

Flow 40 50 65 80 100 150 200 250 300 350 410 460 510 610 760 910

Min - - - 26 41 114 151 303 454 381 908 1,136 1,514 1,893 2,650 3,407

Max - - - 606 1,287 2,271 4,921 9,085 14,006 19,684 27,255 35,961 45,425 52,996 79,494 121,133

60mm Threaded80mm Threaded

60mm

80mm

100mm

150mm

200mm

250mm

300mm

350mm

410mm

510mm

610mm

760mm

910mm

N/A N/A 210 4 HEX N/A 140 90 170 N/A 30 N/A N/A 210 4 HEX N/A 140 90 170 N/A 30 270 205 215 180 90 140 95 170 15 30 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 275 210 220 190 95 140 95 170 20 31 300 220 N/A 205 100 N/A N/A 170 30 45 305 270 290 190 110 170 125 210 25 57 320 290 N/A 250 125 N/A N/A 210 30 79 410 330 N/A 270 130 N/A N/A 280 25 56 440 350 N/A 310 150 N/A N/A 280 35 167 525 430 N/A 335 165 N/A N/A 360 30 275 550 450 N/A 375 185 N/A N/A 360 40 325 660 550 N/A 390 190 N/A N/A 480 30 550 700 580 N/A 440 215 N/A N/A 480 45 600 760 670 N/A 475 230 N/A N/A 635 30 900 800 990 1030 890 770 N/A 590 290 N/A N/A 710 35 1151 930 1220 1260 1220 1265 1610 1650 1930 1980

‘Screaming’ or ‘chattering’ PRVs due to incorrect sizing and valve selection are a common problem,

especially in multi-storey apartment buildings. Key information which needs to be available when sizing

PRVs includes the temperature of the hot water, size of pipe, the inlet pressure, outlet pressure, speed of

water and flow rates.

The main factor in selecting a PRV is not the size so much as the demand or flow rate that you are

looking for the valve to deliver. For example, you may have 40mm line but because of the flow rate and

pressure you require, you may need to step the valve up to 50mm. The reverse can also apply and this is

particularly important as major cost savings can be achieved.

Key criteria to be considered in sizing a PRV include the flow rate required for the application and the

tolerable fall-off. For commercial and industrial applications, fall-off can be more critical. Also, it’s more

important to remember that the maximum reduction is 4 to 1, eg: 1000kPa to 250kPa. If a greater

reduction is required two valves must be used to step the pressure down.

Contractors and specifiers need to establish the appropriate number of PRVs for a project. In apartment

buildings, the mistake is sometimes made of installing one valve to service an entire floor. This means

that the whole floor has to be shut down if the valve needs servicing. It should only be considered

that during the low flow conditions, such as a night where only a hand basin or toilet may be in use,

chattering noise can occur when a larger diameter valve opens for a minimum flow. This can be

overcome by installing a smaller-diameter valve on a bypass to cater for the lower flows.

Proper servicing is important because ongoing exposure to high pressure can cause system damage

resulting in flooding, property damage and insurance claims. Reducing the pressure from 1000kPa to

500kPa can result in water saving of approximately one third because one third less water flows at this

lower pressure.

The difference between PRVs and Pressure Limiting Valves (PLVs) when considering specific applications

is very important. Traditionally, PRVs were considerably more expensive than PLVs, but developments

in design and manufacturing mean that we can now provide PRVs, which are a much better valve, at

around the same price.

PRVs have many benefits over PLVs. They are adjustable, in-line repairable, can stop static pressure creep

and handle pressure spikes, and come with a built in strainer.

AS 1357.2 – 2005 stipulates that the pressure at the outlet of a PRV should fall within plus or minus 10%

while a PLV can vary significantly from plus 35% to minus 10%.

Overnight, when the pressure is higher, PLVs tend to creep, which can create a problem for some

appliances including dishwashers, which may only operate at 300kPa. As well as protecting the piping

within a building from undue stress, controlling pressure to at least 500kPa can have a substantial

positive effect on the life expectancy of appliances such as dishwashers and clothes washers.

“Points to consider when selecting and specifying PRVs”

Operation & Maintenance ManualC150EDirect Acting Pressure Reducing Valve with Integral By-PassSizes ½” , ¾” , 1”, 1-1/4”, 1-1/2” & 2” INSTALLATION INSTRUCTIONSBefore installing reducing valve, flush out line to remove loose dirt and scale which might damage disc and seat. Install valve in line with arrow on valve body pointing indirection of flow. All valves will be furnished with factory settings to reduce to 380kPa. To readjust reduced pressure, loosed out jam nut and turn adjustment screw clockwise (into cover) to raise reduced pressure, or counterclockwise (out of cover) to lower reduced pressure. May be installed in the horizontal or vertical position. NOTICE: Annual inspection and maintenance is required of all plumbing system components. To ensure proper performance and maximum life, this product must be subject to regular inspection, testing and cleaning. Regulators in series: Where the desired pressure reduction is more than a 4 to 1 ratio (i.e. 200psi to 50psi), multiple regulators in series should be installed.SEALED CAGE WARNING: Loosen jam nut at adjustment screw slowly. Look for any trapped water pressure under the sealed cage washer. Relieve pressure before removing bell.CAUTION: Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting. Do not bottom out adjustment screw on bell housing. Valve may be installed in any position.

HOW TO MAKE REPAIRSShut Off Water Service Before Disassembly1. Open water in dwelling to relieve line pressure.2. Note distance that adjustment bolt protrudes from bell housing/cover. Loosen locknut/jam nut on adjustment bolt, then turn adjustment bolt out of bell housing/cover to remove spring tension.3. Unscrew bell housing/cover counterclockwise and remove spring, spring button and friction ring.4. Remove cartridge from regulator by gripping retaining bolt/hex head cap screw with pliers and pulling outwards away from body.

TO REASSEMBLE1. While dissembled, open inlet of water service to flush out valve body and service line of debris.2. Replace old cartridge assembly with new cartridge assembly. Push the cartridge into bore in body making sure O’rings seal tight against both the cartridge and body. (tab on cartridge should line up with slot on body)3. Replace friction ring, spring, spring disc and bell housing/cover. (make sure friction ring is installed with raised edge faced up). Tighten bell housing/cover onto body by turning clockwise.4. Turn adjustment bolt into bell housing/cover to old setting.5. Enter dwelling and turn on several faucets.6. Turn on water service. Let water run for several seconds then turn off faucets in dwelling.7. Adjust regulator to desired pressure by turning adjustment bolt clockwise (into bell housing/cover) to raise pressure or counterclockwise (out of bell housing/cover) to lower pressure.NOTE: When reducing pressure, open a downstream faucet to relieve pressure.8. Tighten locknut/jam nut when desired pressure is achieved.

Warranty: Danfoss Flomatic Regulators are guaranteed against defects of material or workmanship when used for the services recommended. If, in any recommended service a defect develops due to material or workmanship, and the regulator is returned, freight prepaid, to us within 12 months from date of shipment from out factory, it will be repaired or replaced free of charge. The Danfoss Flomatic Corporation liability shall be limited to our agreement to repair or replacement of regulator only. The Flomatic regulator described in this bulletin is suitable for either water or air service. Oil service requires diaphragm and disc. DO NOT use standard construction on oil service.

General Trouble ShootingPipe lines in a water supply system must be of sufficient carrying capacity to maintain adequate pressure at the most remote or highest fixture. Under the maximum probable fixture use, minimum adequate pressure is generally 3.6 to 6.8 kgs, but may be more, depending on the equipment being supplied.Relatively high service pressures which can create high water velocities in pipe lines would allow use of smaller pipes to satisfy fixture use. However, high velocities tend to cause whistling and humming. Reductions of pressure by the use of a pressure reducing valve, in an attempt to eliminate the undesirable condition, may reduce pipe line capacities belowwhat is adequate for maximum probable use.When high service pressures are in effect, either continuously or periodically, the application of a pressure reducing valve will be successful only when the installed pipe line is of adequate size to satisfy the system demand at the lower pressure.When actual water demands are unknown, the valve size should be no less than the existing pipe size.

PROBLEM POSSIBLE CAUSE OR CAUSES1. Pressure creeps or builds up in a system above A. Thermal expansion of water as it is being heated. setting of pressure reducing valve. B. Foreign matter on seating face of sealing ring. C. Cut, worn or chipped seal ring. D. Cut or worn stem o-ring or worn o-ring groove.SOLUTION:A. This is a natural consequence. It may happen each time that the heater runs. A pressure relief valve or expansion tank must be installed. It will not prevent pressure rise but should limit it to a safe level.B. Flush the reducing valve by opening one or two fixture outlets wide. If this does not correct trouble, remove seal ring for cleaning.C. Replace with new seal ring. Temporary repairs may be made by turning seal ring over.D. Replace with new stem o-ring and/or cartridge.

PROBLEM POSSIBLE CAUSE OR CAUSES2. Pressure and fixture flow unsteady. A. Low water supply pressure in mains caused possible by high area demands during certain periods of the day. B. Heavy periodic demands by appliances in the house.SOLUTION:A. This is a water department problem. It is due to the mains being inadequate for the demands made on them.B. House service lines may at times be inadequate for the load. Size of some pipelines may need to be increased. Pressure setting of reducing valve may be too low.C. Try increasing pressure before changing pipelines.

PROBLEM POSSIBLE CAUSE OR CAUSES3. Small inadequate flow from fixtures. A. Pipelines to fixtures may be too small or house main supply may be inadequate for normal fixture demand. B. Heavy periodic demands by appliances in the house. C. Screen clogged with debris.SOLUTION:A. It may be necessary to increase pipe size only in some sections of the system leading to the offending appliances or fixtures. Increasing the house service mains might be necessary if small supply is general at all fixtures.B. Raise pressure gradually by readjusting valve until this point is determined.C. Clean screen.

PROBLEM POSSIBLE CAUSE OR CAUSES4. Valve appears to be noisy, hums, whistles or chatters. A. Hum or whistle is usually caused by high velocity of flow in pipelines causing vibration. B. Chatter usually originates with worn seat washer or loosely installed seat ring.SOLUTION:A. Pipelines could be small or too light. Reducing valves could be too small. Pipes and valves being small would accentuate this condition.B. Inspect seal ring. If a deep channel appears on seal ring face, replace or use the opposite side.C. Frequently, noise appears in a faucet or appliance and seems to originate in the reducing valve. There is a general tendency to use streamline piping of a relatively small size. Velocity is naturally high, and noise of the fast moving-water is not unusual.