NSN 4820-00-504-2642 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 559T-2M-16

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-504-2642 safety relief valve
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NSN 4820005042642


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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 4820-00-504-2642 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 4820-00-504-2642 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-504-2642
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Thread Direction Right-hand all ends
Flow Control Device Poppet
Maximum Operating Temp -40.0 degrees fahrenheit 1st response250.0 degrees fahrenheit 2nd response
Connection Style Plain (pipe) 1st endplain, optional en (pipe) 2nd end
Valve Operation Method Automatic
Connection Type Threaded external pipe 1st endthreaded internal pipe 2nd end
Maximum Operating Pressure 200.0 pounds per square inch single response
Thread Size 0.250 inches all ends
Opening Pressure Setting 16.0 pounds per square inch
Special Features Pop-off line
Material Steel comp 303 bodyrubber butadiene-acrylonitrile class nbr seat
Media For Which Designed Air 1st responseacetylene 2nd responseammonia, gaseous 3rd responserefrigerant 12 4th responsehydrogen 5th response
Style Designator Straight through note: to be used for valve bodies of one section only.
Thread Series Designator Npt all ends

Part Numbers

Part Number Company RNAAC (Repair Depot)
559T-2M-16 CIRCOR AEROSPACE, INC. KE - NAVAL ICP