NSN 4820-00-165-9632 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: D559T2M25, C1058S2D25, D539T2M25, D559T1-2M-25

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-165-9632 safety relief valve
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NSN 4820001659632


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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 4820-00-165-9632 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 4820-00-165-9632 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-165-9632
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.1lb
Thread Direction Right-hand all ends
Flow Control Device Poppet
Disk Loading Method Spring
Maximum Operating Temp 250.0 degrees fahrenheit single response
Connection Style Plain (pipe) all ends
Valve Operation Method Automatic
Connection Type Threaded external pipe all ends
Maximum Operating Pressure 200.0 pounds per square inch single response
Thread Size 0.250 inches all ends
Opening Pressure Setting 25.0 pounds per square inch
Material Steel comp 303
Material Specification Fedstd66, aisi303/sae30303 federal standard all material responses
Media For Which Designed Hydrogen 4th response
Style Designator Straight through w/baffle
Thread Series Designator Npt all ends

Part Numbers

Part Number Company RNAAC (Repair Depot)
D559T2M25 CIRCOR AEROSPACE, INC. AX - DLA LAND AND MARITIME
C1058S2D25 LOCKHEED MARTIN CORPORATION SE - SAN ANTONIO AIR LOGISTICS CENTER
D539T2M25 CIRCOR AEROSPACE, INC. SE - SAN ANTONIO AIR LOGISTICS CENTER
D559T1-2M-25 CIRCOR AEROSPACE, INC. ZZ - USA