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KHR Series Regulators
Maintenance Instructions
Kit Contents
Seat retainer
Seat
Poppet
Poppet spring
Poppet damper
Outer body seal
Inner body seal
Upper piston seal
Piston seal backup ring
Main piston seal
Piston vent seal
Self-vent seat
Self-vent poppet
Self-vent poppet spring
Self-vent seat retainer
Inlet Filter
Lubricant
MS-LT-WL8
Symbols
Discard
Lightly lubricate
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Summary of Contents for Swagelok KHR Series
- Page 1 KHR Series Regulators Maintenance Instructions Kit Contents Seat retainer Seat Poppet Poppet spring Poppet damper Outer body seal Inner body seal Upper piston seal Piston seal backup ring Main piston seal Piston vent seal Self-vent seat Self-vent poppet Self-vent poppet spring...
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Page 2: Tools Required
Vent assembly retainer nut Hex key Vent screw, 1/8 in. or 3 mm Upper spring button set screw Needle-nose pliers Knob handle retainer Swagelok Tools Available Vent retainer tool Self-vent seat retainer Piston assembly bar Piston Filter insertion tool —... -
Page 3: Exploded View
Exploded View Cover Handle retainer Thrust roller bearing Handle Stem Upper Upper spring spring button button screw Stem nuts Vent rod / screw Range spring Body cap Lower spring button Vent screw spring Upper piston seal Seat retainer Piston seal backup ring Piston guide Seat Main piston seal... - Page 4 WARNING 5. Remove the body cap from the body. Note: The range spring and the lower spring button may Before removing a regulator from the system for fall from the body cap. Set aside for later use. service, you must • depressurize system • p urge the system to remove any residual system media left in the regulator.
- Page 5 8. Remove the self-vent poppet spring, the self-vent 12. Loosen and remove the seat retainer. Discard the seat poppet and the self-vent seat from the piston guide. and seat retainer. NOTICE Self-vent poppet spring Be careful not to scratch the inside of the body. Self-vent poppet Leakage could result.
- Page 6 Reassembly 19. Insert the inlet filter using the filter insertion tool into the inlet (marked ‘HP’) of the body. NOTICE NOTICE Ensure all parts and tools are free of debris or Do not insert with sharp tools. Damage to filter damage.
- Page 7 23. Grip the vent rod nut in the vise and tighten to 3.5 ft·lb 26. Place the range spring and the lower spring button into the body cap. Thread the body cap finger-tight into the (5 N·m, 0.5 m·kg). body in the inverted position. Vent retainer tool Body Lower...
- Page 8 31. Apply 50 to 100 psig (3.4 to 6.8 bar) to the LP port, tighten the vent screw until leakage is heard, and then loosen by one-half turn. Stem For additional information, see www.swagelok.com. Swagelok — TM Swagelok Company © 2010 — 2015 Swagelok Company October 2015, R3 MS-CRD-0141...
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