NSN 4820-00-555-0000 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 7545956, 4541-4, 313345-1500

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-555-0000 safety relief valve
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NSN 4820005550000


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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 4820-00-555-0000 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 4820-00-555-0000 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-555-0000
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Thread Class 3b all ends
Thread Direction Right-hand all ends
Flow Control Device Poppet
Bonnet Type Packing retaining
Disk Loading Method Spring
Valve Discharge Flow Rate 2.5 gallons per minute
Maximum Operating Temp 160.0 degrees fahrenheit single response
Connection Style Gasket sea (boss) all ends
Valve Operation Method Automatic
Connection Type Threaded internal boss all ends
Features Provided Pressure tight outlet side
Thready Qty Per Inch (tpi) 20 all ends
Maximum Operating Pressure 3000.0 pounds per square inch single response
Thread Size 0.437 inches all ends
Opening Pressure Setting 1500.0 pounds per square inch
Outside Diameter Tube Accommodated 0.250 inches all ends
Material Stainless steel seat
Material Specification Qq-a-225/6, alloy 2024 federal specification single material response body
Media For Which Designed Hydraulic fluid, mineral base single response
Surface Treatment Anodize
Style Designator Straight thru
Thread Series Designator Unjf all ends

Part Numbers

Part Number Company RNAAC (Repair Depot)
7545956 BOEING COMPANY, THE AX - DLA LAND AND MARITIME
7545956 PNEUDRAULICS, INC. AX - DLA LAND AND MARITIME
4541-4 PNEUDRAULICS, INC. AX - DLA LAND AND MARITIME
313345-1500 HYDRO-AIRE, INC. AX - DLA LAND AND MARITIME
7545956 BOEING COMPANY, THE AX - DLA LAND AND MARITIME