NSN 4820-00-166-8791 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: MIL-V-22549, MIL-V-22549G1-2 400-46T072SBU, 20274K51M, 20274K51MC1D883116768

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-166-8791 safety relief valve
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NSN 4820001668791


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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 4820-00-166-8791 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 4820-00-166-8791 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-166-8791
Categorization Safety or relief valves
Repairability Code

Approximate Weight 11.5lb
Pipe Size Accommodated 0.500 inches all ends
Flow Control Device Disk
Bonnet Type Inside spring
Bonnet Attachment Method Threaded
Disk Loading Method Spring
Valve Discharge Flow Rate 101.0 cubic feet per minute
Maximum Operating Temp 400.0 degrees fahrenheit single response
Connection Style Socket all ends
Valve Operation Method Automatic
Connection Type Unthreaded internal pipe all ends
Features Provided Pressure tight outlet side
Adjustable Pressure Range +46.0/+72.0 pounds per square inch
Maximum Operating Pressure 400.0 pounds per square inch single response
Opening Pressure Setting 72.0 pounds per square inch
Material Nickel alloy flow control device and plastic polytetrafluoroethylene flow control device
Material Specification Qq-n-281 federal specification 1st material response stem or qq-n-288 federal specification 2nd material response stem
Media For Which Designed Air single response
Style Designator Angle
Test Data Document 81349-mil-s-901 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Furnished Items And Quantity 2 nut and 1 lever and 2 tailpiece
Specification Data 81349-mil-v-22549 government specification

Part Numbers

Part Number Company RNAAC (Repair Depot)
MIL-V-22549 MILITARY SPECIFICATIONS AX - DLA LAND AND MARITIME
MIL-V-22549G1-2 400-46T072SBU NAVAL INVENTORY CONTROL POINT AX - DLA LAND AND MARITIME
20274K51M ANDERSON GREENWOOD LP ZZ - USA
20274K51MC1D883116768 PENTAIR VALVES & CONTROLS US LP ZZ - USA
20274K51MC1D883116768 ANDERSON GREENWOOD LP ZZ - USA