Control valves

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

Pressure reducing/surplussing valves

In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2017

TI-P203-01

CTLS Issue 17

DRV4 and DRV4G

Cast Steel

Pressure Reducing Valves

Description

The DRV4 is a cast steel direct acting bellows sealed pressure reducing valve. The standard version has an EPDM diaphragm and

is suitable for steam, water and air applications. The DRV4 is available with a Nitrile rubber diaphragm (suffix 'N') for oil applications.

A Nitrile rubber soft seated version (suffix 'G', limited to 90 °C) is also available for applications that require tight shut-off. It is

recommended that for these applications, a maximum pressure turndown ratio of 10:1 is observed.

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

DRV4 and DRV4G are available in 6 pressure ranges (suffix 1-6).

Downstream pressure ranges:

Range

Valve type Actuator Spring

Pressure

PN

type

1

DRV4(G)B1(N) 1or1N

2

DRV4(G)B2(N) 2or2N

3

DRV4(G)B3(N) 3or3N

4

DRV4(G)B4(N) 4or4N

5

DRV4(G)B5(N) 5or5N

6

DRV4(G)B6(N) 5or5N

* DN32 to DN50 Range 0.15 - 0.6,

**DN65 to DN100 Range 0.4 - 1.2.

colour

Yellow

Yellow

Blue

Blue

Blue

Red

range

(bar)

rating

*0.1 - 0.6

2.5

**0.2 - 1.2

2.5

0.8 - 2.5

6.0

2.0 - 5.0

16.0

4.5 - 10.0

25.0

8.0 - 20.0

25.0

DN65 to DN100 Range 0.3 - 0.6

Sizes and pipe connections

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

Flanged EN 1092 PN40.

JIS and ASME 150 and ASME 300 flanges are also available on request.

Certification

This product is available with certification to EN 10204 3.1.

Note : All certification/inspection requirements must be stated at the time

of order placement.

Kvs values

SizeDN

15

20

25

32

40

50

65

80 100

Kvs

3.4 6.5 11.4 16.4 24

40

58

92 145

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

for safety valve sizing purposes where they are required.

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