Spirax Sarco DP27, Installation And Maintenance Instructions Manual

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IM-P470-03 CH Issue 7
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2. General product information
2.1 General description
DP27, DP27E, DP27G, DP27GY, DP27R and DP27Y pilot operated pressure reducing valves
have bodies manufactured using SG iron.These products are not suitable for oxygen service.
Available types
DP27 Suitable for steam or compressed air applications.
DP27E
Suitable for steam applications. It incorporates an electrical
solenoid valve in the pipe assembly allowing remote closure
by means of a switching or timer device.
DP27G
Suitable for compressed air and inert industrial gas
applications. Its design incorporates a nitrile soft seal pilot
and main valve.
Note: it is not available with a solenoid valve.
DP27GY
Suitable for compressed air, inert industrial gas and critical
low pressure control applications. Its design incorporates
a nitrile soft seal pilot and main valve, and uses a lower
rate control spring with a downstream pressure range of
0.2 - 3.0 bar.
Note: it is not available with a solenoid valve.
DP27R
This can be remotely adjusted by varying a pressure signal to
the pilot diaphragm. This is usually achieved using a Spirax-
Monnier pressure regulator and an instrument air supply.
DP27Y
Suitable for steriliser or critical low pressure control
applications. It uses a lower rate control spring with a
downstream pressure range of 0.2 - 3.0 bar.
Standards
This product fully complies with the requirements of the European Pressure Equipment
Directive 97 / 23 / EC and carries the
mark when so required.
Certification
This product is available with a manufacturer's Typical Test Report. Note: All
certification / inspection requirements must be stated at the time of order placement.
2.2 Sizes and pipe connections
Screwed BSP (BS 21 parallel) or NPT (DN15, DN20 and DN25 only).
Flanged DN15LC - Low Capacity version, DN15, DN20, DN25, DN32, DN40 and DN50.
Standard flanges:
DN15 - DN50
EN 1092 PN16 and PN25
DN25 - DN50 BS 10 Table H and ASME 300
Flanges available on request:
DN15 - DN50 JIS 10/16 and ASME 150
DN15 - DN20 BS 10 Table F
DN15
ASME 300