NSN 4820-00-421-5869 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: A51H9032-1, 34670-3

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-421-5869 safety relief valve
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NSN 4820004215869


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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 4820-00-421-5869 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 4820-00-421-5869 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-421-5869
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Thread Class 3a 1st end
Thread Direction Right-hand 1st end
Flow Control Device Diaphragm
Bonnet Type Packing retaining
Disk Loading Method Spring
Valve Discharge Flow Rate 15.0 cubic feet per minute
Maximum Operating Temp 330.0 degrees fahrenheit single response
Connection Style External seat for gasket seal (boss) 1st end
Valve Operation Method Automatic
Connection Type Threaded external boss 1st end
Thready Qty Per Inch (tpi) 20 1st end
Thread Size 0.437 inches 1st end
Opening Pressure Setting 4500.0 pounds per square inch
Outside Diameter Tube Accommodated 0.250 inches 1st end
Material Steel comp 630 seat
Media For Which Designed Nitrogen, gaseous 2nd response
Surface Treatment Paint and primer
Style Designator Angle
Thread Series Designator Unf 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
A51H9032-1 NORTHROP GRUMMAN SYSTEMS CORPORATION KE - NAVAL ICP
34670-3 EATON CORPORATION KE - NAVAL ICP
A51H9032-1 NORTHROP GRUMMAN SYSTEMS CORPORATION KE - NAVAL ICP