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R55 Series Regulator
IS-R55
Lightly grease with provided lubricant.
Inspect for nicks, scratches, and surface imperfections. If present,
reduced service life is probable and future replacement should
be planned.
Clean with lint-free cloth.
Adjusting Knob
Adjusting Screw Assembly
Bottom
Plug Seal
Bottom Plug - Torque:
3.5 to 5.1 Nm (35 to 45 in. lb.)
Disc Assembly
(Poppet)
Control Spring
Spring, Return
Diaphragm
Assembly
Body
Spring Cage (Bonnet) Assembly -
Torque: 4.5 to 5.6 Nm (40 to 50 in. lb.)
Service Kits / Parts Available
Description
Product Number
Regulator Repair Kit (Relieving)
RKR55
Accessories
Gauges
0 to 60 PSI (0 to 4 bar)
275Y60S
0 to 160 PSI (0 to 11 bar)
275Y160S
0 to 300 PSI (0 to 21 bar)
275Y300S
Panel Mount Bracket / Nut
SA161X57
Panel Mount Nut
R05X51
Wall Mount Bracket
SAR55Y57
Service
Caution: Disconnect or shut off air supply and exhaust
the primary and secondary pressures before servicing
unit. Turning the Adjusting Knob counterclockwise does
not vent downstream pressure on non-relieving
regulators. Downstream pressure must be vented before
servicing regulator.
Caution: Grease packets are supplied with kits for
lubrication of seals. Use only mineral based grease or
oils. Do not use synthetic oils such as esters. Do not use
silicones.
Note: After servicing unit, turn on air supply and adjust regulator
to the desired downstream pressure. Check unit for leaks. If
leakage occurs, do not operate - conduct repairs and retest.
Cleaning
Erratic regulator operation or loss of regulation is most always
due to dirt in the disc area. To clean, shut off and depressurize
air line, and disassemble the regulator. Refer to drawing as a
guide to disassembly and subsequent reassembly. Clean parts
with household soap and blow out body with compressed air.
When reassembling, make sure the disc assembly is firmly in
place, and that the disc stem fits into center hole of diaphragm
assembly. Tighten cage slightly more than hand tight (to 50
inch pounds torque).
