NSN 4820-00-163-5172 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: A42437

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-163-5172 safety relief valve
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NSN 4820001635172


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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 4820-00-163-5172 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 4820-00-163-5172 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-163-5172
Categorization Safety or relief valves
Repairability Code H

If condemned or uneconomically repairable, then dispose at intermediate level.

Approximate Weight 0.0lb
Flow Control Device Disk
Bonnet Type Exposed spring
Bonnet Attachment Method Bolted
Disk Loading Method Spring
Valve Discharge Flow Rate 44000.0 pounds per hour
Renewable Seat Ring Type Threaded
Bolt Hole Quantity 8 2nd end
Valve Operation Method Automatic or manual
Flange Shape Round with holes 2nd end
Features Provided Pressure tight outlet side
Valve Size 2.500 inches
Opening Pressure Setting 730.0 pounds per square inch
Outside Diameter 9.000 inches 2nd end
Thickness 1.250 inches 1st end
Bolt Hole Diameter 0.875 inches 2nd end
Bolt Circle Diameter 7.250 inches 2nd end
Flange Face Design Recessed straight 1st end
Raised Face Height 0.062 inches 2nd end
Raised Face Diameter 5.500 inches 2nd end
Recess Diameter 6.875 inches 1st end
Recess Depth 0.062 inches 1st end
Style Designator Angle flanged ends
Reference Number Differentiating Characteristics As differentiated by the valve discharge flow rate requirement

Part Numbers

Part Number Company RNAAC (Repair Depot)
A42437 PENTAIR VALVES & CONTROLS US LP HD - NAVAL INVENTORY CONTROL POINT