Control valves

Pressure reducing/surplussing valves

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

© Copyright 2014

TI-P204-04

CH Issue 7

Description

The DLV7 is an SG iron direct acting bellows sealed pressure

reducing valve. The standard version has an EPDM diaphragm

and is suitable for steam.

Note: To protect the actuator diaphragm on steam applications a

WS4 water seal pot must be installed in the downstream pressure

signal line to the actuator. Refer to TI-S12-03 for details.

Available types:

The DLV7 is available with the following pressure ranges:

Sizes and pipe connections

DLV7

SG Iron

Pressure Reducing Valve

DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100.

Flanged EN 1092 PN16 and PN25.

Valve + Actuator and Size

DLV71

DN100

DLV72

DN15 to DN50

DN65 to DN80

DLV73

DN100

Pressure range

(bar)

0.5 - 1.5

0.2 - 1.8

0.4 - 1.8

1.0 - 4.0

1.0 - 5.5

3.5 - 13

4.0 - 13

Actuator

PN rating

2.5

2.5

6.0

16.0

16.0

25.0

DN15 to DN80

DN100

DLV75

DN15 to DN80

DLV74

Standards and approvals

This product fully complies with the requirements of the European

Pressure Equipment Directive 97 / 23 / EC and carries the CE mark

when so required.

Certification

This product is available with a manufacturer's Typical Test Report.

Note: All certification/inspection requirements must be stated

at the time of order placement.

Pressure / temperature limits

������

A

B

D

������

������

������

����

��

Steam

saturation

curve

C

E

��

��

����

����

����

����

Pressure bar g

The product must not be used in this

A - B - C Flanged EN 1092 PN16.

region.

PN16

16 bar g @ 100°C

250°C @ 13.9 bar g

0°C

250°C @ 13.9 bar g

0°C

16 bar g

24 bar g

16 bar g

A - D - E Flanged EN 1092 PN25.

Body design conditions

Maximum design

pressure

Maximum design

temperature

Minimum design

temperature

Maximum operating

temperature

PN25

25 bar g @ 100°C

250°C @ 21.8 bar g

0°C

250°C @ 21.8 bar g

Minimum operating temperature

Maximum differential pressure

Designed for a maximum cold

hydraulic test pressure of

Note: With internals fitted,

test pressure must not exceed

0°C

19 bar g

38 bar g

25 bar g

Kvs values

32

40

Note: The Kvs values shown above are full capacities and should

be used for safety valve sizing purposes where they are required.

Size DN 15

20 25

50 65

80 100

K

3.0 5.8 10.2 14.7 21.6 36 52 83 130

vs

Page 1 of 5

4.6.116

T

e

m

p

e

r

a

t

u

r

e

°

C