IM-P006-07 CTLS Issue 12
6
These instructions relate to the use of the DP143
(Section 2.1) and DP163 (Section 2.2) pilot operated
pressure reducing valves on steam applications but can be
used as a guide when the valve is used on compressed air
applications. The DP143G and DP163G are recommended
for compressed air applications, both having a nitrile seal
for the main valve and pilot valve assemblies.
Note: For additional information see the relevant Technical
Information Sheet.
2.1 DP143, DP143G and DP143H
2.1.1 Description
The DP143, DP143G and DP143H pilot operated pressure
reducing valves have been manufactured using cast steel.
Available types
DP143 Suitable for steam applications
DP143G Is a soft seal version available for
compressed air and inert industrial
gases.
Note: It is not recommended for
oxygen service.
DP143H Is a high temperature version for use up
to 350 °C.
Sizes and pipe connections
DN15LC - Low Capacity version, DN15, DN20, DN25, DN32, DN40, DN50 and DN80.
Standard flanges: EN 1092 PN25 and PN40, BS 10 Table 'J' and ASME 300.
Available on request: ASME 150 and JIS 20.
2. General product information
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