NSN 4820-00-203-2577 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 1813BC4 2 1/2IN 58T6PSI FLGE

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-203-2577 safety relief valve
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NSN 4820002032577


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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 4820-00-203-2577 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 4820-00-203-2577 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-203-2577
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Flow Control Device Poppet
Disk Loading Method Spring
Bolt Hole Quantity 4 1st end
Valve Operation Method Automatic
Flange Shape Round with holes 1st end
Connection Type Threaded external tube 1st end
Features Provided Pressure tight outlet side
Adjustable Pressure Range +58.0/+66.0 pounds per square inch
Outside Diameter 7.000 inches 1st end
First Connection Face To Centerline Distance 5.625 inches
Bolt Hole Diameter 0.750 inches 1st end
Second Connection Face To Centerline Distance 6.000 inches
Bolt Circle Diameter 5.500 inches 1st end
Flange Face Design Raised straight 1st end
Style Designator Angle flanged ends

Part Numbers

Part Number Company RNAAC (Repair Depot)
1813BC4 2 1/2IN 58T6PSI FLGE ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT
1813BC4 2 1/2IN 58T6PSI FLGE ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT
1813BC4 2 1/2IN 58T6PSI FLGE ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT
1813BC4 2 1/2IN 58T6PSI FLGE ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT
1813BC4 2 1/2IN 58T6PSI FLGE ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT
1813BC4 2 1/2IN 58T6PSI FLGE ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT