NSN 4820-00-122-1158 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 4231940

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-122-1158 safety relief valve
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NSN 4820001221158


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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 4820-00-122-1158 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 4820-00-122-1158 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-122-1158
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 Poppet
Disk Loading Method Spring
Valve Discharge Flow Rate 10.0 gallons per minute
Connection Style Inverted flare (tube) 1st end
Valve Operation Method Automatic
Connection Type Threaded external tube 1st end
Features Provided Pressure tight outlet side
Thready Qty Per Inch (tpi) 16 1st end
Thread Size 0.750 inches 1st end
Opening Pressure Setting 1800.0 pounds per square inch
Outside Diameter Tube Accommodated 0.500 inches 1st end
Style Designator Angle
Test Data Document 18355-1100 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator Unf 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
4231940 BOEING COMPANY, THE TU - DLA LOGISTICS INFORMATION SERVICE
4231940 BOEING COMPANY, THE TU - DLA LOGISTICS INFORMATION SERVICE