NSN 4820-00-142-1382 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 402040, 595-50FS1-2

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-142-1382 safety relief valve
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NSN 4820001421382


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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 4820-00-142-1382 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 4820-00-142-1382 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-142-1382
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Pipe Size Accommodated 0.500 inches 1st end
Thread Direction Right-hand 1st end
Flow Control Device Disk
Bonnet Type Inside spring
Bonnet Attachment Method Threaded
Disk Loading Method Spring
Renewable Seat Ring Type Threaded
Bolt Hole Quantity 3 2nd end
Maximum Operating Temp 125.0 degrees fahrenheit single response
Connection Style Plain, optional en (pipe) 1st end
Valve Operation Method Manual
Flange Shape Round with holes 2nd end
Connection Type Threaded internal pipe 1st end
Features Provided Valve stem lock shield and pressure tight outlet side
Adjustable Pressure Range +20.0 to 70.0 pounds per square inch
Maximum Operating Pressure 60.0 pounds per square inch single response
Thread Size 0.500 inches 1st end
Outside Diameter 3.562 inches 2nd end
Thickness 0.312 inches 2nd end
First Connection Face To Centerline Distance 1.500 inches
Bolt Hole Diameter 0.562 inches 2nd end
Second Connection Face To Centerline Distance 1.500 inches
Bolt Circle Diameter 2.438 inches 2nd end
Flange Face Design Plain 2nd end
Material Nickel alloy seat
Media For Which Designed Water, fresh single response
Style Designator Angle flanged ends
Thread Series Designator Npt 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
402040 NAVAL SHIP SYSTEMS COMMAND AX - DLA LAND AND MARITIME
595-50FS1-2 KIELEY AND MUELLER INC AX - DLA LAND AND MARITIME