Econ Double Regulating Valves

5/20/2018 Econ Double Regulating Valves

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ECON

Double Regulating

Valves


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EME/H/V/12/00

Double Regulating Valves ( DRV)

General Design & Application:The Double Regulating Valves are also called Balancing Valves.

Econosto Double Regulating and Commissioning Valves are installed in the pipe work of chilledwater air conditioning and hot water central heating systems as well as potable water systemsand serve to achieve a hydronic balance between the various circuits of the system. The balanceis achieved by a pre-setting with memoryposition. The required values of pre-setting can be obtained from the flowcharts. All intermediate values areinfinitely adjustable.

The selected pre-setting can be read-offtwo scales (basic scale and fineadjustment scale). The Econosto doubleregulating and commissioning valves havetwo threaded ports for fill and drain ballvalves or pressure test points for themeasurement of differential pressure. TheEconosto double regulating andcommissioning valves are delivered with 2 blind plugs as a standard unless test points arerequested.

The Econosto double regulating and commissioning valves may be installed in either the supplyor the return pipe. The flow charts are valid for both cases provided the direction of flow conformswith the arrow marked on the valve body.

Advantages of Econosto DRVs:- One valve for 3 functions:

Pre-setting, measuring and isolating

- Low pressure loss

Unique design and oblique pattern

- Infinitely adjustable pre-setting

Exact measurement of pressure loss by means of the pressure test points.

- Patented measuring channel

designed around the stem assembly to the test points ensures the best possible accuracybetween differential pressure measured at the pressure test points and the actualdifferential pressure of the valve.

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Distribution of flow :The main reason for these problems isthat incorrect flows are available in thevarious circuits. If this is the case, theproblem may be solved by installing adouble regulating and commissioningvalves or flow regulators in thecorresponding pipes. The course ofpressure in a circuit makes clear why thisoccurs.

total to guarantee a sufficient supply to appliance 4.This will however, inevitably result in aexcessive differential pressure at the appliances 1 to 3 leading to an increased flow at theseappliances and thus to an increased energy consumption. To remedy this, double regulating andcommissioning are installed. The excess in differential pressure is now absorbed by the doubleregulating and commissioning valves. The desired flow rate may be controlled and set. To beable to control appliance 4 as well it is recommended to install a double regulating andcommissioning valve here too. The correct supply of each appliance is now guaranteed.

The illustration shows that the pump has to produce a differential pressure of at least delta P -

Why do we need to Balance Air Conditioning Systems ?

Balancing of heating and chilled water air conditioning systems is necessary to avoid thefollowing problems :

1. Some rooms almost never achieve the desired room temperature or are not cooled sufficiently.This problem especially arises in case of influence of other heat sources.

2. After changing over from low temperature to heating operation, parts of the system are onlyheated after a long time.

3. Fluctuating room temperatures especially arising during low demand periods.

4. High energy consumption although the required room temperature regulator is installed. Evenhigh quality regulators may not solve this problem.

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FeaturesPN 25

Variable OrificeBronze Double Regulating and Commissioning Valve

Y Pattern

Non - Rising Stem

Threaded ends to BS 21 (BSPP)

Variable Orifice with linear scale and circular scale ( fine adjustment )

Hydrostatic Test PressureBody : 37.5 bar

Seat : 27.5 bar

Pressure / Temperature Rating25 bar at -10 to 120 deg C

Maintenance free valve.

Lowflowresistance due to unique design.

Complies to BS 7350 accuracy requirements.

Tight closure of valve is assured by use of PTFE disc insert.

Hand wheel embraces a vernier scale for accurate setting

Valves have unique design which enables the disc to be locked in the set

Valve can be sealed in the set position with the

sealing wire and lead seal.

Two ports (inlet/outlet) are available on the body of the DRV (Fig: 2601V).

These points are for fixing

the measuring nipples or test plugs for the -

measurement of flow/ delta P (balancing).

position.

Fig . 2601V

ECON Bronze Double Regulating Valve

___

___

__VS S

Flowrate (l/s)

Differential Pressure (signal) through the pressure test points of the valve (kPa)

VS Flow coefficient through the pressure test points of the valve (m / hour)3

Flow Rate

Brass Self Closing Test Plug - 1/4"

38 mm

Fig . 2922

On Request ( Forward Delivery)Available with NPT Threads

Subject to minimum order quantity

Double Regulating Valves

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Component Material DIN BS

01 Bronze G-CuSn5ZnPb (Rgs) 1400LG2

02 DZR Brass

03 DZR Brass04 DZR Brass

05 PTFE

No

06

07

Body

Stem

DiscBonnet

Seat Ring

O-Ring

Cap / Knob

EPDM

ABS

-

--

PTFE

-

-

2874 CZ132

2874 CZ1322874 CZ132

PTFE

-

-

Material Specification

Dimensions & Weights

Nominal Size Dimensions Weight

D (Inches) L (mm) H (mm) Kv- Open (m /h) Kg

1/2

3/4

1

1 1/41 1/2

2

90

102

110

121

142

161

90

90

90

116

116

116

2.6

4.3

6.6

14.5

22.5

33.1

0.460

0.520

0.660

0.960

1.310

1.880

3

ASTM

B62 C83600

-

--

PTFE

-

-

Fig . 2601V


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FeaturesPN 16Variable Orifice

Cast Iron Double Regulating and Commissioning Valve

Confirms BS 5152 ( EN 13789 )

Y Pattern

Non - Rising Stem

Flanged to BS 4504 / DIN PN 16 ( EN1092 )Variable Orifice with liner scale and circular scale ( fine adjustment )

Hydrostatic Test PressureBody : 24 bar

Seat : 17.6 bar

Face to Face DimensionsEN 558 - 1 Basic Series 1

Pressure / Temperature Rating16 bar at -10 to 120 deg C

Maximum Differential PressureDN 65 - DN 200 : 16 barDN 250 : 6 bar

DN 300 : 4 bar

Fig . 2920W

Complies to BS7350 requirements

Hand wheel embraces a vernier scale for accurate setting.

Valves have unique design whichenables the disc to be locked in the set -

position witha screwdriver.

Valve is supplied witha screwdriver secured to the hand wheel.

Two points (inlet/outlet)are available on the bodyof the valve for fixing the -measuring nipples / test plugs for measurement of flow/ delta P(balancing).

ECON Cast Iron Double Regulating Valve

On Request ( Forward Delivery)Available with ANSI Flange drilling

Subject to minimum order quantity


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Dimensions & Weights

Nominal Size Dimensions Weight

D (mm) D (mm) L (mm) H(mm) Kg

65

80

250

100

125

150

200

300

180

180

180

250

250

250

420

420

290

310

350

400

480

600

730

850

293

305

323

353

388

453

575

645

18.0

23.0

33.5

49.0

62.0

96.0

195.0

315.0

Material SpecificationComponent Material DIN BS

01 Cast Iron 1691GG25 1561-GJL-250

02 CI+EPDM Coated

02 a SS+EPDM Ring

03 Brass

04 Stainless Steel

No

05

06

07

08

09

10

Body

Disc DN 65 - 200

Disc DN 250 & 300

Disc Nut

Hand Wheel

Stem

O-Ring

Bonnet

Gasket

Nut

Gland

EPDM

Cast Iron

Graphite

GGG40+Epoxy Coating

Carbon Steel

Brass

1691GG25

-

X20Cr13

X10Cr13

1691GG25

-

-

-

-

-

1561-GJL-250

-

420 S37

410S21

-

1561-GJL-250

-

-

-

-

11

12 Adjusting Bolt

Position Indicator Plastic

Brass

-

-

-

-

13 Bolt Carbon Steel - -

ASTM

A126 CI B

A126 CI B

-

AISI 420

AISI 420

-

A126 CI B

-

-

-

B16 C36000

-

B16 C36000

-

Fig . 2920W

DN 65 - DN 200 DN 250 - DN 300


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0.5

0.7

1.0

1.31.51.7

2.0

2.3

2.5

2.7

3.0

3.33.54.0

33

Fig 2601V: Size 15mm (1/2 ")

Kvs(m/h)

Knob Turns

2.672.67 2.442.44 2.252.25 1.751.75 1.351.35 1.181.18 1.061.06 0.940.94 0.810.81 0.750.75 0.680.68 0.550.55 0.440.44 0.370.37

4.04.0 3.53.5 3.33.3 3.03.0 2.72.7 2.52.5 2.32.3 2.02.0 1.71.7 1.51.5 1.31.3 1.01.0 0.70.7 0.50.5

Knob Setting / Turns

p

=Signal(kPa)

Q (l/s) - FlowrateQ (l/s) - Flowrate

33

Fig 2601V: Size 20mm (3/4")

Kvs(m /h)

Knob Turns

4.104.10 3.403.40 2.902.90 2.202.20 1.701.70 1.501.50 1.301.30 1.201.20 1.001.00 0.900.90 0.800.80 0.700.70 0.500.50 0.400.40

4.04.0 3.53.5 3.33.3 3.03.0 2.72.7 2.52.5 2.32.3 2.02.0 1.71.7 1.51.5 1.31.3 1.01.0 0.70.7 0.50.5

0.

5

0.

7

1.

0

1.

3

1.

5

3.

5

1.

7

2.

0

2.

3

2.

5

3.

0

3.

3

3.

5

4.0




s

p

=Signal(kPa)

s

10.10.01

1

10

100

100

10

1

0.01 0.1 1.0

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33

Fig 2601V: Size 25mm (1")

Kvs(m /h)

Knob Turns

6.56.5 5.95.9 5.65.6 5.15.1 4.84.8 4.54.5 3.53.5 2.92.9 2.72.7 2.42.4 2.02.0 1.61.6 1.21.2

4.04.0 3.53.5 3.03.0 2.72.7 2.52.5 2.32.3 2.02.0 1.71.7 1.51.5 1.31.3 1.01.0 0.70.7 0.50.5


p

=Signal(kPa)


Fig 2601V: Size 32mm (1 1/4 ")

0.

5

0.

7Knob Setting / Turns



s

0.5

0.7

1.0

1.31.5

1.7 2

.0

2.32.5

2.73.0

3.54.0

33Kvs(m /h)

Knob Turns

12.012.0 11.211.2 10.410.4 8.68.6 7.67.6 6.56.5 5.15.1 4.44.4 4.14.1 3.73.7 3.33.3 2.62.6 1.41.4

4.04.0 3.53.5 3.03.0 2.72.7 2.52.5 2.32.3 2.02.0 1.71.7 1.51.5 1.31.3 1.01.0 0.70.7 0.50.5

1.

0

1.

3

1.

5

2.

0

2.

3

2.

5

2.

7

3.

0

3.54.0

1.7

1010.011

10

100

0.1

p

=Signal(kPa)

s

0.01

1

10

100

1010.1

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33

Fig 2601V: Size 40mm (1 1/2")

Kvs(m /h)

Knob Turns

19.519.5 17.617.6 16.616.6 14.114.1 11.611.6 10.010.0 8.28.2 6.16.1 4.94.9 4.54.5 4.14.1 3.53.5 3.03.0 2.72.7

4.04.0 3.53.5 3.33.3 3.03.0 2.72.7 2.52.5 2.32.3 2.02.0 1.71.7 1.51.5 1.31.3 1.01.0 0.70.7 0.50.5


p

=Signal(kPa)


33

Fig 2601V: Size 50mm (2")

Kvs(m /h)

Knob Turns

29.829.8 27.227.2 23.923.9 21.721.7 19.919.9 17.917.9 14.814.8 12.112.1 10.610.6 9.49.4 7.87.8 5.05.0 3.93.9

4.04.0 3.53.5 3.03.0 2.72.7 2.52.5 2.32.3 2.02.0 1.71.7 1.51.5 1.31.3 1.01.0 0.70.7 0.50.5




s

p

=Signal(kPa)

s

1010.11

10

100

0.

5

0.

7

1.

0

1.

3

1.

5

1.

7

2.

0

2.

3

2.

5

2.

7

3.

0

3.

3

3.

5

4.

0

101

1

10

100

0.1

0.

5

0.

7

1.

0

1.

3

1.

5

1.

7

2.

0

2.

3

2.

5

2.

7

3.

0

3.

5

4.

0

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Fig 2920W: Size 65mm (2 1/2")

Number of Rotations

Kv Value

Fig 2920W: Size 80mm (3")


00 11 22 33 44 55 66 88

00 9.09.0 14.514.5 22.722.7 33.133.1 44.744.7 59.959.9 74.574.5

77

67.367.3

Kv Value according to VDI / VDE 2173. Kv Value : Flow in m /h at 1 bar headloss33

1 2 3 4 5 6 7 81.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0 10 20 30 40 50 60 70 80

PressureDrop(bar)

Flowrate (m / h)Flowrate (m / h)33

Kv Value according to VDI / VDE 2173. Kv Value : Flow in m /h at 1 bar headloss

125

1 2 3 4 5 6 7 81.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

25 50 75 100

PressureDrop(bar)


0

Number of Rotations

Kv Value

00 11 22 33 44 55 66 88

00 16.716.7 25.625.6 38.238.2 55.655.6 74.074.0 89.089.0 118.4118.4

77

106.6106.6

33

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Fig 2920W: Size 100mm (4")

Fig 2920W: Size 125mm (5")


Number of Rotations

Kv Value

00 11 22 33 44 55 66 88

00 25.025.0 48.748.7 71.471.4 104.0104.0 138.6138.6 163.2163.2 203.0203.0

77

187.1187.1


1 2 3 4 5 6 7 81.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0 0 25 50 75 100 125 150 175 200

PressureD

rop(bar)


225


Number of Rotations

Kv Value

00 11 22 33 44 55 66 88

00 33.733.7 57.257.2 71.471.4 91.091.0 115.5115.5 141.2141.2 178.5178.5

77

159.9159.9

Number of Rotations

Kv Value

99 1010 1111 1212 1313 1414

195.0195.0 213.6213.6 237.5237.5 257.8257.8 281.0281.0 296.2296.2

1 2 3 6 7 10 11 121.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

00 25 75 100 150 200 225 250

4 5 8 9 13 14

50 125 175 275 300

PressureDrop(bar)


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Pressure

Drop

(bar)

Pressure

Drop

(bar)

EME/H/V/12/00

Fig 2920W: Size 150mm (6")

Number of Rotations

Kv Value


00 11 22 33 44 55 66 88

50.050.0 80.180.1 92.892.8 112.5112.5 137.5137.5 169.8169.8 197.7197.7

77

233.5233.5

Number of Rotations

Kv Value

99 1010 1111 1212 1313 1414

270.3270.3 303.1303.1 338.7338.7 377.5377.5 399.2399.2 415.9415.9

00

1 2 3 6 7 10 11 121.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0 50 100 150 200 250 300 350 400


4 5 8 9 13

14

Kv Value according to VDI / VDE 2173. Kv Value : Flow in m /h at 1 bar headloss

Fig 2920W: Size 200mm (8")

Number of Rotations

Kv Value

00 11 22 33 44 55 66 88

63.863.8 128.9128.9 161.0161.0 205.3205.3 254.9254.9 312.5312.5 375.7375.7

77

420.5420.5

Number of Rotations

Kv Value

99 1010 1111 1212 1313 1414

476.7476.7 537.1537.1 592.9592.9 655.4655.4 711.5711.5 759.3759.3

00

33Kv Value according to VDI / VDE 2173. Kv Value : Flow in m /h at 1 bar headloss

1 2 3 6 7 10 11 121.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

00 100 200 300 400 500 600 700 800

4 5 8 9 13 14


33

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Fig 2920W: Size 250mm (10")

Number of Rotations

Kv Value


00 11 22 33 44 55 66 88

53.353.3 65.565.5 88.888.8 131.5131.5 177.4177.4 224.1224.1 275.4275.4

77

349.3349.300


33Kv Value according to VDI / VDE 2173. Kv Value : Flow in m /h at 1 bar headloss

123 10 12 131.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0 200 400 600 800 1000 1200 1400

4 9 11 15 16


12 8 111.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

Pressure

Drop

(bar)

Pressure

Drop

(bar)

7 10

800 950 1100

9 12


1000400 500 700600100 3002000

3 4 5 6 13 14 15 16 17 18

99

425.7425.7

Number of Rotations

Kv Value

1010 1111 1212 1313 1414 1515 1616 1818

590.5590.5 671.4671.4 755.2755.2 836.6836.6 901.0901.0 966.9966.9 1030.61030.6

1717

1058.81058.8505.9505.9

Fig 2920W: Size 300mm (12")

Number of Rotations

Kv Value

00 11 22 33 44 55 66 88

70.670.6 79.979.9 83.983.9 123.6123.6 176.1176.1 233.3233.3 307.5307.5

77

416.3416.300

99

566.4566.4

Number of Rotations

Kv Value

1010 1111 1212 1313 1414 1515 1616 1818

924.4924.4 1049.01049.01130.31130.31182.21182.21222.21222.21276.91276.91340.31340.3

1717

1422.61422.6744.6744.6

1919

1459.51459.5

5 6 7 8 14 1817

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Presetting of Econ Balancing Valve Fig : 2601V

Econosto DRV and commissioning valves are designed for installation in hot water heating andchilled water air conditioning systems and served to achieve a hydronic balance between thevarious circuits of the system. It is important to note that the direction of flow must conform withthe direction of the arrow on the valve body and that the valve must be installed with a minimumof 5D (5 x nominal pipe diameter) straight pipe in the upstream side and 2D in down stream side.

The required preset value

of valve.Any intermediate preset value is available.The selected preliminary setting can be made

from the two part scale -

the basic scale and the fine adjustment scale.

Presetting :

1. The preset valve of the valve is adjusted with the handwheel.

a. The display of the basic setting is shown in the lower windows by the sliding indicator.Each turn of the handwheel is represented by a number inside the window.

b. The display of the fine setting is shown in the handwheel windows scale and each numberindicates 1/10

thof a turn of the handwheel.

2. Carefully remove the cover plug in the centre of the handwheel by using a small screwdriver in.the slot and gently prising it off.

3. With the valve at the required preset value,using a 3 mm allen key, turn the inner screw.clockwise until it seats. The inner screw is located in the hole through the nut. The 3 mm allen

.key is supplied along with every valve.

4. Refit the cover plug.

Protecting the setting:

A sealing wire may be threaded through the hole in the handwheel and a lead seal fitted.

For presetting and fine adjustment of the flow volume (balancing),Econosto offers the PFM Flex 3 -Pressure and Flow Measuring InstrumentThe Econosto PFM-Flex3 - Pressure and Flow Measuring Instrument is an advanced wirelessoperating precision instrument for measuring and data retention of flow in Heating, Cooling, andDrinking Water systems.

can be obtained by reference to the flow chart appropriate for the size

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Presetting of Econ Balancing Valve Fig : 2920W

664

CDBEA

Econ balancing valve are supplied with the suitable screw driver fixed to the hand wheel. Thewarning and instruction leaflet (sticker) is fixed on the body of each valve which provides clearinstructions for valve operation. The number full revolutions is indicated on the linear scale C,fine adjustment is visible on the circular pitch D one turn is divided into ten parts.

1) Remove the red plastic hand wheel cap A.

2) Close the valve completely & check if the linear scale Cand circular pitch Dindicate 0 0.adjustment.3) Open the valve as required set the number of full revolutions on the linear scale C and.tenth of turn on the circular pitch D.

4) Insert enclosed screw driver E into the screw B, rotate the regulating screw anticlockwise to.set the double regulating feature, a positive stop will be felt.5) Put the cap A on the head of bolt B.

MaintenanceEvery part of the valve is designed in such a way that the whole valve is maintenance free. Thematerials are carefully matched with the parts to make the friction as small as possible. However,due to safety reasons, every valve should be inspected regularly. Before valve removal from theplant or before service the suitable part of the pipeline should be closed.

InstallationTake off the plastic covers from the flanges. Blow inside valve by compressed air. The pipeline

should be placed in such a way that valve body does not carry bending moments nor tensionforces. The linear scale and the plastic set should be protected against painting. The valves couldbe installed in every position in inlet and outlet pipelines with the hand wheel in down direction.Attention should be paid to flow direction indicated by the arrow on the valve body. Before startingpipeline work (especially after repairs) whole pipeline should be rinsed out by fully opening thevalves in order to remove all solid residues which could be dangerous for sealing surfaces.Turning the hand wheel clockwise (according to direction indicated on the hand wheel) can closethe valve. The valve is opened by anti-clockwise rotation of the hand wheel. It is prohibited to useadditional lever for turning the hand wheel.

For presetting and fine adjustment of the flow volume (balancing),offers the PFM Flex 3 - Pressure and Flow Measuring Instrument.

The Econosto PFM Flex3 - Pressure and Flow Measuring Instrument is an advanced wirelessoperating precision instrument for measuring and data retention of flow in Heating, Cooling, andDrinking Water systems.

Econosto

It is important to note that the direction of flow must

conform with the direction of the arrow on the valve body and that the valve must be installed with

a minimum of 5D (5 x nominal pipe diameter) straight pipe in the upstream side and 2D in down

stream side.

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Measuring Instruments

ME/H/V/12/00

DescriptionPFM Flex 3 (PFM = Pressure Flow Meter) is an instrument for pressure- and flow

measurements. The intended usage is checking and documentation of waterflow in heating- and cooling constructions. PFM Flex 3 consists mainly of a

Measuring Sensor and a Hand Terminal (PPC) including the BalanceFlexprogram software. The Sensor measures differential pressure as well as

temperature and communicates via Bluetooth with the Hand Terminal.

The Hand Terminal software comprises data of most of the existing balancing

valves on the market. From the Hand terminal list of Balancing Valves, the

operator choose the actual one (manufacture, model, dimension, position(giving the corresponding KV). This valve data together with measured DP

are the basics for calculation of the correct flow which will be displayed on

the Hand terminal screen.

Measurement readings can be shown in a graphical form in the Hand Terminal.

Readings of balanced values with respective valve data can be saved and latershown on the Hand Terminal screen or even on a PC screen that is connected

to the Hand Terminal. The Hand Terminal has a rechargeable battery, type

Lithium Ion as well as a system battery. Charging of Hand Terminal is done

via enclosed charger.

The Sensor has two connections for hoses that are to be connected over the

measuring object. There is also a handle device on the Sensor for opening and

closing of the measuring cell. The Sensor has a rechargeable battery pack of

6.600 mAh. Charging is done via the enclosed battery charger.

Technical SpecificationsMeasurement Range : - Total Pressure: max 2500kPa

- Differential Pressure: 0-1000kPa. (Optional: 0 - 2000kPa) - Recommended pressure range: 3 200kPa

- Static pressure: 500m with antenna (option)

IP - class Sensor: IP65

PFM Flex3 - Portable Meter for measuring flow and pressure difference across DRVs

Fig . PFM Flex3

: - Differential Pressure:

Econ Double Regulating Valves

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