NSN 4820-00-261-9590 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 3220-425, 3120-425, VAL234

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-261-9590 safety relief valve
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NSN 4820002619590


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AS9120B:2015 ISO 9001 Audited and Certified

FAA and EASA Part 145 Certified Repair Stations Ensuring the highest standards of quality and compliance for our clients' needs.

We specialize in the repair and refurbishment of nsn components. From mechanical assemblies to rotor blades, our comprehensive capabilities cover a wide range of NSN parts, providing cost effective solutions to extend the operational life of vital equipment.

NSN 4820-00-261-9590 has been designated as a repairable item and has been included in our capabilities catalog. If you require overhaul or repair services use the form on this page to send us your information. We will provide you with a lead time and price quote.

Repairability and Datasheet

NSN 4820-00-261-9590 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-261-9590
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.7lb
Pipe Size Accommodated 0.500 inches 2nd end
Thread Class 3a 1st end
Thread Direction Right-hand 1st end
Flow Control Device Poppet
Disk Loading Method Spring
Connection Style Plain (pipe) 2nd end
Valve Operation Method Automatic
Connection Type Threaded external tube 1st end
Features Provided Valve stem lock shield and pressure tight outlet side
Thready Qty Per Inch (tpi) 14 2nd end
Thread Size 0.875 inches 1st end
Seat Angle 45.0 degrees 1st end
Opening Pressure Setting 425.0 pounds per square inch
Outside Diameter Tube Accommodated 0.625 inches 1st end
Special Features The end connection identified above as the second end is the valve inlet
Material Copper alloy
Style Designator Angle
Thread Series Designator Unf 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
3220-425 SUPERIOR VALVE CO AX - DLA LAND AND MARITIME
3120-425 SUPERIOR VALVE CO AX - DLA LAND AND MARITIME
VAL234 TRANE U.S. INC. ZZ - USA