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All Categories > Relief Valves > 504 Relief Valves > Item # 504-B  
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Item # 504-B, 504 Relief Valves

List Price $90.00

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  • Relief valve
  • 0-6000 PSI relief pressure
  • Nickel plated brass


Series Designation

504 Series


Relief Valve

Special Features

Nickel Plated Brass

Maximum Rated Pressure

6000 psi

Outlet Pressure Setting Range/Adjustment Range (Adjustable)

900-6500 psi

Inlet Port Size

1/4 in. MNPT

Outlet Port Size

Side vent; Not captured

Flow Capacity

50 SCFM at 1500 psi
100 SCFM at 3000 psi

Flow Coefficient (Cv)

0.094 in. orifice diameter


Bubble Tight

Outlet Pressure Rating



95 g

Overall Length

2.5 Inch

Hex Diameter

0.87 Inch

Minimum Temperature

-15 ºF

Body Material

Nickel Plated

Internal Materials


Seal Materials


Repair Kit/Service Items


Special Note

Safety wire holes on device, but no safety wire included. NOT SHIPPED OXYGEN CLEANED


Technical Bulletin for 504 Relief Valves
(DOC, 110KB)

Model 504 & 504H Relief Valve Operation & Maintenance Manual
(PDF, 9KB)

Use of Valves and Regulators with Oxygen Gas
(DOC, 145KB)

 Repair Kit for 504 Series Relief Valves 

Repair Kits
Repair Kit for 504 Series Relief Valve

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