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Stainless steel construction provides unique corrosion resistance

Viton elastomers throughout

Inline mounting

Diaphragm-type design

Self-relieving; non-relieving optional

BPTF port threads; optional BSPP threads

Ambient/Media Temperature: 40° to 125°F (4° to 52°C)

Body: Stainless steel

Dome: Nylon

Knob: Acetal

Fluid Media: Compressed air

Inlet Pressure: 300 psig (21 bar) maximum

Outlet Pressure: Adjustable up to 100 psig (7 bar)

Panel Mounting: 1-3/16 inch (30 mm) hole required

Seals: Viton

Catalog Pages

Service Kits and Other Literature

Service Kits & Maintenance Parts

Valve Assembly Kit:
A33-533SV.......Viton Valve, Stainless Steel Spring, Guide and a O-ring

Diaphragm Assembly Kit:
A10R-56SV........Viton Diaphragm,Stainless Steel Support, Stainless Steel Retainer and a Spacer

Adjusting Screw Assembly Kit:
A33-75S........Stainless Steel Spring Rest and Adjusting Screw


Select the required* options below to generate a part number.
Part NumberDescriptionPrice
R56S-2AHVSS REG1/4,NO-REL,0-125,VI$253.24
R56S-2AHVPSS REG1/4,NO-REL,0-125,VI$255.53
R56S-2AL15VWDIA 1/4BSP,NON-REL,0-15,V$253.24
R56S-2AL30VDIA.1/4 SS,NON-REL,0-30,V$253.24
R56S-2AVDIA REG 1/4 S.S.NON-REL$253.24
R56S-2AVWDIA 1/4 S.S.NON-REL,BSPP$253.24
R56S-2HVDIA REG 1/4 S.S. 0-125$253.24
R56S-2HVPDIA S.S.REG1/4,0-125,VTON$255.53
R56S-2HVPNDIA REG 1/4"SS,0-125,NUT$256.77
R56S-2L15VDIA REG 1/4 S.S. 0-15$253.24
R56S-2L30VDIA REG 1/4 S.S. 0-30$253.24
R56S-2LVDIA REG 1/4 S.S. 0-50$253.24
R56S-2LVPDIA S.S.REG 1/4,0-50,VTON$255.53
R56S-2VDIA REG 1/4 S.S.$253.24
R56S-2VPNDIA REG 1/4 S.S.,ALUM.NUT$256.77
R56S-2VWDIA REG 1/4 S.S. BSPP$253.24
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