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All Categories > Relief Valves > 504 Relief Valves > Item # 504-1-H-L  
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Item # 504-1-H-L, 504 Relief Valves

List Price $141.00

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  • Relief valve
  • 0-6000 PSI relief pressure
  • British Pipe Thread
  • Extended set pressure (6500 psi)
  • Low Temperature service (-60ºF)


Series Designation

504 Series


Relief Valve

Special Features

British Pipe Thread
Extended Set Pressure

Low Temperature

Maximum Rated Pressure

6500 psi

Outlet Pressure Setting Range/Adjustment Range (Adjustable)

900-6500 psi

Inlet Port Size

3/8 in. British straight

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



60 g

Overall Length

2.5 Inch

Hex Diameter

0.87 Inch

Minimum Temperature

-60 ºF

Body Material

Anodized Aluminum

Internal Materials


Seal Materials


Repair Kit/Service Items


Special Note

Safety wire holes on device, but no safety wire included.


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

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

 Repair Kit for 504-L Series Relief Valves 

Repair Kits
Repair Kit for 504-L Series Relief Valve

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