NSN 4820-00-631-2061 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 559B-3M-50

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-631-2061 safety relief valve
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NSN 4820006312061


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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 4820-00-631-2061 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 4820-00-631-2061 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-631-2061
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Pipe Size Accommodated 0.375 inches 1st end
Thread Direction Right-hand 1st end
Flow Control Device Poppet
Disk Loading Method Spring
Maximum Operating Temp 250.0 degrees fahrenheit 2nd response
Connection Style Plain (pipe) 1st end
Valve Operation Method Automatic
Connection Type Threaded external pipe 1st end
Maximum Operating Pressure 200.0 pounds per square inch single response
Thread Size 0.375 inches 1st end
Opening Pressure Setting 50.0 pounds per square inch
Special Features Pop-off type
Material Copper alloy
Material Specification Qq-c-390, alloy a4 federal specification single material response
Media For Which Designed Helium 4th response
Style Designator Straight through note: to be used for valve bodies of one section only.
Thread Series Designator Npt 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
559B-3M-50 CIRCOR AEROSPACE, INC. AX - DLA LAND AND MARITIME