NSN 4820-00-073-2255 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: D524T4D20, 202-22500-4-20

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-073-2255 safety relief valve
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NSN 4820000732255


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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 4820-00-073-2255 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 4820-00-073-2255 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-073-2255
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.1lb
Thread Class 3a 1st end
Thread Direction Right-hand 1st end
Flow Control Device Poppet
Bonnet Type Inside spring
Bonnet Attachment Method Integral
Disk Loading Method Spring
Maximum Operating Temp 400.0 degrees fahrenheit single response
Minimum Operating Temp -65.0 degrees fahrenheit
Connection Style Plain (pipe) 1st end
Valve Operation Method Automatic
Connection Type Threaded external tube 1st end
Adjustable Pressure Range +10.0/+30.0 pounds per square inch
Maximum Operating Pressure 200.0 pounds per square inch single response
Thread Size 0.437 inches 1st end
Opening Pressure Setting 20.0 pounds per square inch
Outside Diameter Tube Accommodated 0.250 inches 1st end
Material Steel comp 303 seat
Material Specification Fedstd66, aisi303/sae30303 federal standard single material response body
Media For Which Designed Nitrogen, gaseous 5th response
Surface Treatment Passivate
Style Designator Straight through w/baffle
Thread Series Designator Unjf 1st end
Furnished Items And Quantity 1 deflector cap

Part Numbers

Part Number Company RNAAC (Repair Depot)
D524T4D20 CIRCOR AEROSPACE, INC. AX - DLA LAND AND MARITIME
202-22500-4-20 TRIUMPH AEROSTRUCTURES, LLC AX - DLA LAND AND MARITIME