Swagelok RHPS Series User Manual
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Summary of Contents for Swagelok RHPS Series
- Page 1 RHPS Series LPRD20 - 40 User Manual Read the complete manual before installing and using the regulator.
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Page 2: Table Of Contents
WARNING Before removing a regulator from the system for service, you must Depressurize system Purge the system to remove any residual system media left in the regulator. Contents Introduction ............................... 3 Installation ..............................4 Operation ..............................7 Maintenance .............................. 9 Testing .............................. -
Page 3: Introduction
Introduction Representative drawing of a standard LPRD25 body assembly guide ring O-ring dome cover retaining ring ring body plug valve spring valve case O-ring socket head cap screw valve screw diaphragm ring push rod valve insert body plate guide bush diaphragm plate O-ring diaphragm screw... -
Page 4: Installation
Installation WARNING ® When installing a Swagelok self-venting regulator, position the vent connection or line away from operating personnel. Operating personnel must protect themselves from exposure to system fluids. CAUTION Do not use the regulators as a shutoff device. The preferred mounting position of the regulator is horizontal with the dome facing upwards. - Page 6 External feedback CAUTION When using the regulator with external feedback, make sure that the outlet pressure can be fed back to the external feedback connection before applying pressure to the regulator. Failing to do so may lead to damage and non-functioning of the regulator as the inlet pressure will be put straight through to the outlet.
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Page 7: Operation
Operation Make the final pressure setting in the direction of increasing pressure to obtain the most accurate set points. Once fluid is flowing through the system, fine tuning may be required. Icing of the regulator at high flow rates or high pressure drops may occur if the gaseous media or atmosphere contains moisture. - Page 8 Changing the set pressure Check the supply of medium at the inlet side. CAUTION When using the LPRD20, 25, 30 or LPRD40 with an inlet pressure higher than 2 bar, a safety valve must be installed in the outlet line, because the outlet pressure may not exceed 2 bar. ...
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Page 9: Maintenance
Points of attention before assembly All parts must be clean and undamaged before starting assembly. Swagelok recommends replacing all O-rings and the diaphragm before assembly. All threaded parts must be lightly lubricated before assembly, this to avoid galling of threads. ... -
Page 10: Testing
Recommended torques CAUTION Only tighten the bolts or parts if the regulator is completely depressurized. Hexagon socket head screws M12 (body plug) 50 N·m (442 in.·lb) (LPRD30&40 only) Body plug 50 N·m (442 in.·lb) (LPRD20&25 only) Dome cover screws M6 15 N·m (132 in.·lb) Testing Check the regulator for leakage across the seat, with low- and high inlet pressure. -
Page 11: Troubleshooting
Troubleshooting Problem: The outlet pressure creeps up, without increasing the dome pressure. Cause: A damaged valve and/or seat. Solution: Replace the valve and/or the seat. Problem: Leakage around the body plug. Cause: A damaged O-ring or insufficient torque on the body plug. Solution: Replace the O-ring or tighten the body plug according to the torque specifications. - Page 12 Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty. For a copy, visit swagelok.com or contact your authorized Swagelok representative. For additional information, see www.swagelok.com. Swagelok, Snoop – Swagelok Company © 2011 Swagelok Company Caution: Do not mix or interchange parts March 2011, R0 with those of other manufacturers.
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