NSN 4820-00-504-8590 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 72498, 128SCH136-3

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-504-8590 safety relief valve
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NSN 4820005048590


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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 4820-00-504-8590 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 4820-00-504-8590 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-504-8590
Categorization Safety or relief valves
Repairability Code H

If condemned or uneconomically repairable, then dispose at intermediate level.

Approximate Weight 1.3lb
Thread Class 3b 1st end
Thread Direction Right-hand 1st end
Flow Control Device Poppet
Connection Style Gasket sea (boss) 1st end
Valve Operation Method Automatic
Connection Type Threaded internal boss 1st end
Thready Qty Per Inch (tpi) 18 1st end
Thread Size 0.562 inches 1st end
Outside Diameter Tube Accommodated 0.375 inches 1st end
Material Steel
Style Designator Straight thru
Thread Series Designator Unjf 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
72498 HYDRO-AIRE, INC. KE - NAVAL ICP
128SCH136-3 NORTHROP GRUMMAN SYSTEMS CORPORATION KE - NAVAL ICP
72498 TRANSDIGM INC KE - NAVAL ICP