NSN 4820-00-572-5510 Repair Services

Restrictor Check Valve Overhaul, Repair, and Maintenance

MPN: 1R3743-12-30, 1R3748-12-30

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-572-5510 restrictor check valve
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NSN 4820005725510


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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 4820-00-572-5510 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 4820-00-572-5510 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-572-5510
Categorization Check valves of materials other than copper, iron or steel
Repairability Code

Approximate Weight 0.0lb
Thread Class 3a 1st end
Thread Direction Right-hand 1st end
Flow Control Device Poppet
Connection Style Flared (tube) 1st end
Connection Type Threaded external tube 1st end
Mounting Position Horizontal
Thready Qty Per Inch (tpi) 20 1st end
Maximum Operating Pressure 3000.0 pounds per square inch single response
Thread Size 0.437 inches 1st end
Seat Angle 37.0 degrees 1st end
Outside Diameter Tube Accommodated 0.250 inches 1st end
Material Stainless steel flow control device
Media For Which Designed Hydraulic fluid, phosphate-ester base single response
Style Designator Straight thru
Thread Series Designator Unf 1st end

Part Numbers

Part Number Company RNAAC (Repair Depot)
1R3743-12-30 SAF INDUSTRIES LLC SB - 645 MSSQ/MSIAPCS
1R3748-12-30 SAF INDUSTRIES LLC SB - 645 MSSQ/MSIAPCS