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(LP)RS(H)4/6/8 Pressure-Reducing Regulator User Manual Read the complete manual before installing and using the regulator.
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Safe Product Selection When selecting a product, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user. WARNING • Users must be trained and equipped for the handling, use, and servicing of pressure products and systems.
It is not intended to be used as a safety relief valve. Oxygen Service For more information about hazards and risks of oxygen enriched systems see the Swagelok Oxygen System Safety technical report (MS-06-13). Cleaning and packaging to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C is available.
The regulator is suitable for gases or liquids. Ensure compatibility between the regulator’s materials of construction and the system media. Swagelok recommends the use of a non-venting regulator when the process media is hazardous or toxic. Installation Verify that the regulator, its connections, and any accessories are undamaged.
Operation Required Tools for Operation No tools are required for changing the set pressure on a standard regulator. A 12 mm open-ended wrench and a 4 mm hex drive are required for anti-tamper regulators. Points of Attention Before Operation CAUTION The product can be hot or cold, depending on the environmental temperature and the process media temperature.
To reduce maintenance related system downtime to a minimum, either during commissioning or normal operation, Swagelok recommends having maintenance kits readily available on site. The need for maintenance kits is particularly important during the commissioning phase of a system installation due to residual assembly debris remaining in the system.
Points of Attention Before Removal from the System Swagelok recommends removing the regulator from the system for servicing and maintenance. Follow all local system safety and maintenance procedures when removing the regulator. WARNING Before removing a regulator from the system, to avoid personal injury, you must: •...
Assembly Reference Data Torque Recommended Lubrication Item Component Name Type(s) lbf·ft (N·m) (included in kit per Table 1) Body plug C1, C2 37 (50) Lubricate threads Body plug backup ring B1, B2, C1, C2 Body plug O-ring B1, B2, C1, C2 Poppet spring C1, C5 ①...
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For more information on RHPS series maintenance kits, refer to the Pressure Regulators, RHPS Series catalog, MS-02-430. RS(H) Series, Standard, Exploded View Fig 1...
Maintenance kit components will be supplied preassembled where practicable to aid reassembly. Swagelok recommends replacing all O-rings removed during disassembly. Swagelok recommends that dynamic O-rings should be lightly lubricated per Table 2. NOTICE All threaded components must be lightly lubricated per Table 2 before reassembly to avoid...
14. Lightly lubricate the knob assembly stem (26) then insert it into the spring housing (23). RS Series: Standard Piston Sensing 1. Follow steps 1 through 7 of the RS series standard diaphragm sensing reassembly procedure. 2. Insert the piston plate O-ring (15), piston O-ring (17) and, if present, piston backup ring (18) and piston guide ring (19) into the piston plate (16).
RS Series: Piston Sensing, Self-venting Option 1. Follow steps 1 through 7 of the RS series standard diaphragm sensing reassembly procedure. 2. Fit the self-vent seat O-ring (33) over the self-vent seat (32) then insert the seat into the self-vent piston (14).
Testing Swagelok recommends that the regulator be tested for seat and shell leakage to atmosphere. A well performing regulator will not show any indication of leaking. If any evidence of a leak is identified this must be rectified. Any damaged components must be replaced.
Troubleshooting Symptom Cause Remedy The outlet pressure creeps up, A damaged poppet and/or Replace the poppet and/or seat. without adjusting the spring. seat. Leakage around the body plug. A damaged O-ring. Replace the O-ring. A damaged diaphragm or O- Replace the diaphragm or O-ring. Leakage between the body and ring.
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