1732

®

Fixed Orifice Double Regulating Valve

Flow Data Fig 1732

®

In this flow data manual we have endeavoured to make the information as accurate aspossible and we cannot accept any responsibility should it be found that in any respectthe information is inaccurate or incomplete or becomes so as a result of furtherdevelopments or otherwise.

© Crane Ltd 2005

The data in this section relates to bronze fixed orifice double regulating valves (FODRV)Fig 1732L (1/2”), 1732M (1/2”), and 1732 (1/2” to 2”)..Note: Suffix L indicates low flow, M indicates medium flow and C indicates compression

end for copper pipe.The correction factors used to calculate the Kvs values for copper pipe are based on an average value of compression fittings.If other pipe materials and adaptors are used please contact the Hattersley Technical Department.

1.0 Flow Coefficient Kv/KvsNote: Kv relates to the FODRV’s pressure loss whilst Kvs relates to the signal across

the orifice for flow measurement.

Kv = Kvs = Q where Q = flow rate m3/h.√∆P ∆P = differential pressure in bar.

2.0 Kvs Values - Flow Measurement

3.0 Kv Values - FODRV - Full Open

4.0 Kv Values - FODRV - 25% Open

®

Engineering Data

Fixed Orifice Double Regulating Valve - FODRV

© Crane Ltd 2005

Measurement L M 1/2 3/4 1 11/4 11/2 2

Kvs 0.506 1.003 1.943 4.181 7.46 15.33 23.06 47.70

Measurement LC MC 15 C 22 C

Kvs 0.511 1.029 2.037 4.457

Head Loss L M 1/2 3/4 1 11/4 11/2 2

Kv 0.57 1.06 1.87 3.14 5.59 10.8 18.1 29.1

Head Loss L M 1/2 3/4 1 11/4 11/2 2

Kv 0.16 0.18 0.29 0.40 0.92 0.72 1.28 1.95

®

Engineering Data

Fixed Orifice Double Regulating Valve - FODRV

© Crane Ltd 2005

5.0 Valve Sizing

The design method for sizing components is to establish firstly, the mass flow rateneeded to carry the required amount of heat to a zone and secondly, to relate this to anappropriate flow velocity or pressure loss per unit length. A pipe size can then be selectedand all components are line size.

In the case of metering stations and DRV’s the same rule applies because their design isbased also on appropriate flow velocities and pipe pressure losses.

As the power of the pump is determined from the index circuit, it is of no consequencewhat the head loss is through the DRV’s other than fully open.Note that the delivery of the pump is based on the requirement of the complete system.

6.0 ß Ratio

The ß ratio is the ratio of the orifice diameter to pipe bore diameter and this has beencarefully selected for each metering station to minimise the effects of variations in internalbores or where an incorrect grade of pipe has been used and to cater for lower velocitiessometimes encountered in smaller pipe sizes.

7.0 Installation

Straight Pipe Lengths

It is important that there should be minimum of 5 diameters of straight pipe upstream and 2 diameters of straight pipe downstream, without intrusions, of the Fig 1732 for repeatable performance.

Less than these diameters will increase inaccuracy to an unacceptable level, the valueof which is unpredicable as it is not a stable value.

®

Fig

ure

1732

LC

,173

2L,1

732C

and

1732

Kv

Val

ues

Key

25%

Op

enP

osi

tio

n

No

teK

v=Q

whe

reQ

=flo

wra

tein

m3 /h

√ ∆P

and

∆P=

head

loss

for

Kv

inba

r

©C

rane

Ltd

2005

Val

veP

osi

tio

n4

0.57

1.06

1.87

3.14

5.59

10.8

18.1

29.1

3.5

0.5

4

0.93

1.64

2.80

4.82

10.1

16.8

26.6

30.

42

0.57

1.27

2.11

3.42

8.81

14.5

23.5

2.5

0.39

0.48

0.85

1.49

2.29

6.59

9.89

18.5

20.

33

0.40

0.63

0.80

1.77

3.52

5.00

12.0

1.5

0.27

0.30

0.46

0.59

1.34

1.17

2.20

5.55

10.

16

0.18

0.29

0.40

0.92

0.72

1.28

1.95

Val

veS

ize

15&

1 /2

Lo

w

15&

1 /2

Med

15&

1 /2

22&

3 /4

1 11/4

11/2 2

Fig

.173

2F

OD

RV

-S

ize

Sel

ecto

r

®

1 /2”

to2”

size

sm

inim

umflo

w=

1kP

asi

gnal

.0.

75to

1.15

m/s

reco

mm

ende

dra

nge

offlo

wve

loci

ties*

~1.

2m

/sm

axim

umve

loci

tyfo

rF

ig77

0D

e-A

erat

or1.

5m

/sm

axim

umflo

wve

loci

tyin

heat

ing

and

cool

ing

coils

~*

Rec

omm

ende

din

BS

RIA

App

licat

ion

Gui

de~

Rec

omm

ende

din

CIB

SE

Gui

deC

4~

Phy

sica

lcon

side

ratio

nsof

ten

mak

eit

impo

ssib

leto

sele

ctva

lve

size

sto

mee

tth

em

inim

umre

com

men

ded

flow

velo

city

.

For

15m

man

d1 /

2”lo

wan

dm

ediu

mflo

wF

OD

RV

sM

inan

dM

axre

pres

ent

the

norm

alflo

wra

nge

for

sele

ctio

npu

rpos

es.

©C

rane

Ltd

2005

0.01

0.03

0.02

90.

06

0.02

90.

06

Min

Max

0.01

0.03

15m

m17

32C

l/s

22m

m17

32C

l/s

1 /2 ”

1732

l/s

3 /4 ”

1732

l/s

1”17

32l/s

11/ 4

”17

32l/s

2”17

32l/s

11/ 2

”17

32l/s

Siz

eF

OD

RV

15m

m17

32LC

l/s

1 /2 ”

1732

Ll/s

15m

m17

32M

Cl/s

1 /2 ”

1732

Ml/s

1.32

51.

652.

543.

31

Min

-1

kPa

0.75

m/s

1.15

m/s

1.5

m/s

0.05

70.

110.

170.

22

0.05

40.

150.

240.

31

0.12

40.

240.

370.

48

0.11

60.

270.

420.

55

0.20

70.

440.

670.

88

0.42

60.

761.

171.

53

0.64

11.

031.

592.

07

1.15

m/s

1.5

m/s

0.17

0.22

0.24

0.31

0.37

0.48

0.42

0.55

Engineering Data15mm Fig. 1732LC Flow Measurement Low FlowGraph of Signal against Flow RateVelocity based on average inside diameter of BS EN 1057 copper pipe i.e. 13.6mm

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.009 0.01 0.02 0.03 0.04 0.06 0.08 0.1

FLOWRATE - l/s

0.1 0.15 0.2 0.3 0.4 0.5 0.6VELOCITY - m/s

Issue 1 15mm Fig 1732LC

Flow Coefficient Kvs = 0.511

Engineering Data15mm Fig. 1732LC FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS EN 1057 copper pipe i.e. 13.6mm

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.009 0.01 0.02 0.03 0.04 0.06 0.08 0.1 0.2

FLOWRATE - l/s

0.1 0.15 0.2 0.3 0.4 0.5 0.75 1.0VELOCITY - m/s

HE

AD

LO

SS

kPa

15mm Fig 1732LCIssue 1

PO

SIT

ION

OP

EN

3

21.51 2.5

4

3.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.16 0.27 0.33 0.39 0.42 0.54 0.57

Engineering Data1/2” Fig. 1732L Flow Measurement Low FlowGraph of Signal against Flow RateVelocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.009 0.01 0.02 0.03 0.04 0.06 0.08 0.1

FLOWRATE - l/s

0.05 0.1 0.15 0.2 0.3 0.4 0.5VELOCITY - m/s

Issue 1 1/2" Fig 1732L


Engineering Data1/2” Fig. 1732L FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.009 0.01 0.02 0.03 0.04 0.06 0.08 0.1 0.2

FLOWRATE - l/s

0.05 0.1 0.15 0.2 0.3 0.4 0.5 0.75VELOCITY - m/s

HE

AD

LO

SS

kPa

1/2" Fig 1732LIssue 1

PO

SIT

ION

OP

EN

3

21.51 2.5

4

3.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.16 0.27 0.33 0.39 0.42 0.54 0.57

Engineering Data15mm Fig. 1732MC Flow Measurement Medium FlowGraph of Signal against Flow RateVelocity based on average inside diameter of BS EN 1057 copper pipe i.e. 13.6mm

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.01 0.02 0.03 0.04 0.06 0.08 0.1 0.2 FLOWRATE - l/s

0.1 0.15 0.2 0.3 0.4 0.5 0.75 1.0VELOCITY - m/s

Issue 1 15mm Fig 1732MC


Engineering Data15mm Fig. 1732MC FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS EN 1057 copper pipe i.e. 13.6mm

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.01 0.02 0.03 0.04 0.06 0.08 0.1 0.2

FLOWRATE - l/s

0.1 0.15 0.2 0.3 0.4 0.5 0.75 1.0VELOCITY - m/s

HE

AD

LO

SS

kPa

15mm Fig 1732MCIssue 1

PO

SIT

ION

OP

EN

321.51 2.5

4

3.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.18 0.30 0.400 0.48 0.57 0.93 1.06

Engineering Data1/2” Fig. 1732M Flow Measurement Medium Flow Graph of Signal against Flow RateVelocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.01 0.02 0.03 0.04 0.06 0.08 0.1 0.2 FLOWRATE - l/s

0.1 0.15 0.2 0.3 0.4 0.5 0.75 1.0VELOCITY - m/s

Issue 1 1/2" Fig 1732M


Engineering Data1/2” Fig. 1732M FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.01 0.02 0.03 0.04 0.06 0.08 0.1 0.2

FLOWRATE - l/s

0.05 0.1 0.15 0.2 0.3 0.4 0.5 0.75VELOCITY - m/s

HE

AD

LO

SS

kPa

1/2" Fig 1732MIssue 1

PO

SIT

ION

OP

EN

321.51 2.5

4

3.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.18 0.30 0.40 0.48 0.57 0.93 1.06

Engineering Data15mm Fig. 1732C Flow MeasurementGraph of Signal against Flow RateVelocity based on average inside diameter of BS EN 1057 copper pipe i.e. 13.6mm

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.03 0.04 0.05 0.06 0.08 0.1 0.2 0.3 0.4 FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0VELOCITY - m/s

Issue 1 15mm Fig 1732C


Engineering Data15mm Fig. 1732C FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS EN 1057 copper pipe i.e. 13.6mm

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.03 0.04 0.05 0.06 0.08 0.1 0.2 0.3 0.4

FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 2.5VELOCITY - m/s

Issue 1 15mm Fig 1732C

HE

AD

LO

SS

kPa

4

3.5

PO

SIT

ION

OP

EN

321.51 2.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.29 0.46 0.63 0.85 1.27 1.64 1.87

Engineering Data1/2” Fig. 1732 Flow MeasurementGraph of Signal against Flow RateVelocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.03 0.04 0.05 0.06 0.08 0.1 0.2 0.3 0.4 FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0VELOCITY - m/s

Issue 1 1/2" Fig 1732


Engineering Data1/2” Fig. 1732 FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.03 0.04 0.05 0.06 0.08 0.1 0.2 0.3 0.4

FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0VELOCITY - m/s

Issue 1 1/2" Fig 1732

HE

AD

LO

SS

kPa

4

3.5

PO

SIT

ION

OP

EN

321.51 2.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.29 0.46 0.63 0.85 1.27 1.64 1.87

Engineering Data22mm Fig. 1732C Flow MeasurementGraph of Signal against Flow RateVelocity based on average inside diameter of BS EN 1057 copper pipe i.e. 20.22mm

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.06 0.08 0.1 0.2 0.3 0.4 0.5 0.6 0.8

FLOWRATE - l/s

02 0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

Issue 1 3/4" Fig 1732C


Engineering Data22mm Fig. 1732C FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS EN 1057 copper pipe i.e. 20.22mm

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

HE

AD

LO

SS

kPa

0.06 0.08 0.1 0.2 0.3 0.4 0.5 0.6 0.8 FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 2.5 VELOCITY - m/s

22mm Fig 1732CIssue 1

4

PO

SIT

ION

OP

EN

321.51 2.5 3.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.40 0.59 0.80 1.49 2.11 2.80 3.14


®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.06 0.08 0.1 0.2 0.3 0.4 0.5 0.6 0.8

FLOWRATE - l/s

02 0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

Issue 1 3/4" Fig 1732



®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

HE

AD

LO

SS

kPa

0.06 0.08 0.1 0.2 0.3 0.4 0.5 0.6 0.8 FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

3/4" Fig 1732Issue 1

4

PO

SIT

ION

OP

EN

321.51 2.5 3.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.40 0.59 0.80 1.49 2.11 2.80 3.14

Engineering Data1” Fig. 1732 Flow MeasurementGraph of Signal against Flow RateVelocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.1 0.2 0.3 0.4 0.5 0.6 0.8 1.0 1.5

FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

Issue 1 1" Fig 1732


Engineering Data1” Fig. 1732 FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.1 0.2 0.3 0.4 0.5 0.8 1.0 1.5

FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

0.5

HE

AD

LO

SS

kPa

1" Fig 1732Issue 1

PO

SIT

ION

OP

EN

321.51 2.5 3.5 4

Position 1 1.5 2 2.5 3 3.5 4Kv 0.92 1.34 1.77 2.29 3.42 4.82 5.59


®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.5

SIG

NA

LkP

a

0.4 0.2 0.3 0.4 0.5 0.6 0.8 1.0 2.0 2.5

FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 2.5 VELOCITY - m/s

Issue 1 11/4" Fig 1732



®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

HE

AD

LO

SS

kPa

0.2 0.3 0.4 0.5 0.6 0.8 1.0 2.0 2.5 FLOWRATE - l/s

0.2 0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

11/4" Fig 1732Issue 1

PO

SIT

ION

OP

EN

43.5321.5 2.5

Position 1 1.5 2 2.5 3 3.5 4Kv 0.72 1.17 3.52 6.59 8.81 10.1 10.8


®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.5

SIG

NA

LkP

a

0.3 0.4 0.5 0.6 0.8 1.0 2.0 3.0 4.0

FLOWRATE - l/s

0.3 0.4 0.5 0.75 1.0 1.5 2.0 2.5 VELOCITY - m/s

Issue 1 11/2" Fig 1732



®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.3 04 0.5 0.6 0.8 1.0 2.0 3.0

FLOWRATE - l/s

0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

HE

AD

LO

SS

kPa

Issue 1 11/2" Fig 1732

PO

SIT

ION

OP

EN

43.5

3

21.5 2.51

Position 1 1.5 2 2.5 3 3.5 4Kv 1.28 2.20 5.00 9.89 14.5 16.8 18.1

Engineering Data2” Fig. 1732 Flow MeasurementGraph of Signal against Flow RateVelocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

SIG

NA

LkP

a

0.5 0.6 0.8 1.0 2.0 3.0 4.0 5.0 6.0

FLOWRATE - l/s

0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

0.5

Issue 1 2" Fig 1732


Engineering Data2” Fig. 1732 FODRVGraph of Headloss against Flow Rate indicating pressure drop attributable to the valveinstalled in a circuit.Velocity based on average inside diameter of BS 1387 Medium Grade pipe.

®

© Crane Ltd 2005

100

80

60

40

20

10

8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4 0.5 0.6 0.8 1.0 2.0 3.0 4.0 5.0

FLOWRATE - l/s

0.3 0.4 0.5 0.75 1.0 1.5 2.0 VELOCITY - m/s

HE

AD

LO

SS

kPa

2" Fig 1732Issue 1

PO

SIT

ION

OP

EN

4

3.5

3

21.51 2.5

Position 1 1.5 2 2.5 3 3.5 4Kv 1.95 5.55 12.0 18.5 23.5 26.6 29.1

1732

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