NSN 4820-00-446-3543 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 1110323, 26J535PC1T023, 26J539PC52, 26J610PC1T023, 27J409PC1T023

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-446-3543 safety relief valve
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NSN 4820004463543


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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 4820-00-446-3543 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 4820-00-446-3543 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-446-3543
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Pipe Size Accommodated 1.250 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
Bolt Hole Quantity 4 2nd end
Maximum Operating Temp 425.0 degrees fahrenheit single response
Connection Style Plain, optional en (pipe) 1st end
Valve Operation Method Automatic or manual
Flange Shape Round with holes 2nd end
Connection Type Threaded internal pipe 1st end
Valve Size 1.000 inches
Adjustable Pressure Range +7.0/+25.0 pounds per square inch
Maximum Operating Pressure 100.0 pounds per square inch single response
Thread Size 1.250 inches 1st end
Outside Diameter 4.250 inches 2nd end
Thickness 0.438 inches 2nd end
First Connection Face To Centerline Distance 3.000 inches
Bolt Hole Diameter 0.562 inches 2nd end
Second Connection Face To Centerline Distance 1.906 inches
Bolt Circle Diameter 3.125 inches 2nd end
Flange Face Design Plain 2nd end
Material Nickel alloy flow control device
Media For Which Designed Steam single response
Style Designator Angle flanged ends
Thread Series Designator Npt 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
1110323 WESTINGHOUSE ELECTRIC CORP XX -
26J535PC1T023 WESTINGHOUSE ELECTRIC CORP XX -
26J539PC52 WESTINGHOUSE ELECTRIC CORP XX -
26J610PC1T023 WESTINGHOUSE ELECTRIC CORP XX -
27J409PC1T023 WESTINGHOUSE ELECTRIC CORP XX -
1110323 WESTINGHOUSE ELECTRIC CORP XX -
27J409PC1T023 WESTINGHOUSE ELECTRIC CORP XX -
26J535PC1T023 WESTINGHOUSE ELECTRIC CORP XX -
26J539PC52 WESTINGHOUSE ELECTRIC CORP XX -
26J610PC1T023 WESTINGHOUSE ELECTRIC CORP XX -