R34 & RA4 Regulators
1R110
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.
Service
! CAUTION:
SHUT OFF MEDIA SOURCE and exhaust the primary and
secondary pressure before disassembling regulator unit. (Turning
the Knob counterclockwise reduces regulator’s setting, but does
not vent downstream pressure on non-relieving regulators.)
! CAUTION:
Lubricate parts with a mineral based oil / grease or silicone
grease. DO NOT use synthetic oils / greases such as esters.
A. Servicing the Bonnet and Diaphragm assembly-
1. Disengage the Adjusting Knob by pulling upward. Turn Adjusting Knob
counterclockwise until the compression is released from the Pressure
Control Spring.
2. Unscrew the threaded Bonnet Assembly. Next, disassemble, clean,
and carefully inspect parts for wear and / or damage. If replacement is
necessary, use parts from service kits.
3. Lubricate O-ring and Lip Seals with grease (supplied with kits).
4. Install Diaphragm Assembly into Body. Then install Bonnet Assembly
to Body and tighten to 11.3 to 13.6 Nm (100 to 120 in. lb.).
B. Servicing the Poppet Assembly-
1. Exhaust system media pressure as previously described. Then remove
Bonnet by unscrewing it from Body. Next, remove Valve Seat, Poppet
Return Spring and Poppet Assembly.
2. Next, disassemble, clean, and carefully inspect parts for wear and / or
damage. If replacement is necessary, use parts from service kits.
3. Lubricate O-ring and sliding surfaces using grease supplied with
service kit.
4. Install Diaphragm Assembly into Body Assembly. Assemble Bonnet
Assembly into Body and tighten per Figure 1.
5. Turn on media source and adjust to desired secondary pressure as
described in the Operation section.
Turn on media pressure and check regulator for leakage. If leakage
occurs, DO NOT OPERATE — conduct repairs again.
If you have questions concerning how to service this unit, contact your
local authorized dealer or your customer service representative.
Knob
Bonnet - Torque:
11.3 to 13.6 Nm (100 to 120 in. lb.)
Adjusting Screw Assembly
Control Spring
Spring, Return
Diaphragm Assembly
(Includes Upper Diaphragm Plate
& Lower Diaphragm Button and Seal
Inner Valve
Assembly (Poppet)
Body
Valve Seat
Manifold Version Shown
Figure 1
Service / Parts Kits Available
Description
R34 1/8", 1/4" & Manifold
Gauge, 0 to 60 (0 to 4 bar)
K4515N18060
Gauge, 0 to 160 (0 to 11 bar)
K4515N18160
Mounting Bracket / Nut
SA161X57
Panel Mount Nut
R05X51
Regulator Repair Kit
(Relieving)
GRP-96-725
Regulator Repair Kit
(Non-Relieving)
GRP-96-726
Spring, 0-25 PSIG (0 to 1.7 bar)
GRP-95-111
Spring, 0-60 PSIG (0 to 4 bar)
GRP-96-718
Spring, 0-125 PSIG (0 to 8.6 bar)
GRP-96-717
