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 2019
TI-P208-01 CTLS Issue 4
Description The DPP17E is an SG iron pilot operated pressure reducing valve fitted with an additional pressure control pilot. This allows the valve to reduce the pressure to a lower level when required. The high pressure pilot is fitted to the main valve body. The reduced pressure pilot is fitted to the side of the main valve. Change over is achieved by electrical switching of the solenoid. The DPP17EE has an additional solenoid valve fitted which allows the main valve to be opened and closed by a remote signal. DPP17E and DPP17EE Pilot Operated Pressure Reducing Valves with SG Iron Bodies
Capacities See TI-P006-03 for steam and compressed air sizing. A low capacity version of the DN15 is available: Type DN15LC. The Kv maximum values shown below are full capacities and should be used for safety valve sizing purposes only. DN15LC 1
Sizes and pipe connections DN15LC, DN15, DN20, DN25, DN32, DN40 and DN50. Screwed BSP (BS 21 parallel) or NPT (DN15 to DN25 only). Standard flanges: DN15 - DN50 BS 4504 PN16 and PN25 DN25 - DN50 BS 10 Table H and ANSI 300
4.6 119
DN15 - DN50 JIS 10/16 and ANSI 150 DN15 - DN20 BS 10 Table F DN15 ANSI 300
DN15
2.8
Available on request:
DN20
5.5
For conversion: C v (UK) = K v x 0.963 C v (US) = K v x 1.156
DN25
8.1
DN32
12
DPP17E
DN40 DN50
17
28
Note: Where the internal downstream pressure sensing pipe is used the valve capacity will be reduced.
DPP17EE
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