NSN 4820-00-564-8278 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: 28935, N28935

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-564-8278 safety relief valve
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NSN 4820005648278


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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 4820-00-564-8278 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 4820-00-564-8278 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-564-8278
Categorization Safety or relief valves
Repairability Code D

When repair is beyond lower level maintenance capability, evacuate the item to depot. disposal is not authorized below wholesale level.

Approximate Weight 2.0lb
Thread Class 3b 1st end
Thread Direction Right-hand 1st end
Flow Control Device Poppet
Disk Loading Method Spring
Valve Discharge Flow Rate 6.0 gallons per minute
Connection Style Gasket sea (boss) 1st end
Connection Type Threaded internal boss 1st end
Thready Qty Per Inch (tpi) 16 1st end
Adjustable Pressure Range +2500.0 to 4200.0 pounds per square inch
Maximum Operating Pressure 4200.0 pounds per square inch single response
Thread Size 0.750 inches 1st end
Media For Which Designed Hydraulic fluid, phosphate-ester base single response
Style Designator Err-090
Thread Series Designator Unf 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
28935 HYDRO-AIRE, INC. XX -
N28935 HYDRO-AIRE, INC. XX -