Control systems Pressure reducing/surplussing valves
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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-P204-01 CTLS Issue 15
DRV7 and DRV7G SG Iron Pressure Reducing Valves
Description The DRV7 is an SG iron direct acting bellows sealed pressure reducing valve. The standard version has an EPDM diaphragm and is suitable for steam, water and air applications. The DRV7 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: DRV7 and DRV7G are available in 6 pressure ranges (suffix 1-6). Downstream pressure ranges: Range Valve type Actuator type Spring colour Pressure range bar PN Rating
4.6 47
1 2 3 4 5 6
DRV7(G)B1(N)
1 or 1N Yellow *0.1 - 0.6
2.5
DRV7(G)B2(N) DRV7(G)B3(N) DRV7(G)B4(N) DRV7(G)B5(N) DRV7(G)B6(N)
2 or 2N Yellow **0.2 - 1.2
2.5
3 or 3N
Blue
0.8 - 2.5
6.0
4 or 4N
Blue
2.0 - 5.0
16.0
5 or 5N
Blue
4.5 - 10.0
25.0
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. Standard flanges: EN 1092 PN16 and PN25 Flanges available on request: ASME 150 and JIS K v values Size DN 15 20 25 32 40 50 65 80 100 K v 3.4 6.5 11.4 16.4 24 40 58 92 145 Note : The K v values shown above are full capacities and should be used for safety valve sizing purposes where they are required.
Flanged DN15 to DN100
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