Control systems Pressure reducing/surplussing valves
4
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 2021
TI-P203-01 CTLS Issue 19
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 type
4.6 35
Spring colour
Pressure range (bar)
PN rating
1 2 3 4 5 6
DRV4(G)B1(N) 1 or 1N Yellow DRV4(G)B2(N) 2 or 2N Yellow
* 0.1 - 0.6
2.5
** 0.2 - 1.2
2.5
DRV4(G)B3(N) 3 or 3N Blue 0.8 - 2.5 DRV4(G)B4(N) 4 or 4N Blue 2.0 - 5.0
6.0
16.0
DRV4(G)B5(N) 5 or 5N Blue 4.5 - 10.0 25.0 DRV4(G)B6(N) 5 or 5N Red 8.0 - 20.0 25.0
* DN32 to DN50 Range 0.15 - 0.6, DN65 to DN100 Range 0.3 - 0.6 ** DN65 to DN100 Range 0.4 - 1.2. 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. K vs values Size DN 15 20 25 32 40 50 65 80 100 K vs 3.4 6.5 11.4 16.4 24 40 58 92 145 Note: The K vs values shown above are full capacities and should be used for safety valve sizing purposes where they are required.
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