NSN 4820-00-328-8236 Repair Services
Restrictor Check Valve Overhaul, Repair, and Maintenance
MPN: 4R121-117, 749831-117
Pricing and Lead Time Quote
Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-328-8236 restrictor check valveFAA 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 4820-00-328-8236 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 4820-00-328-8236 can be offered in repaired, serviceable, overhauled, or inspected conditions.| National Stock Number (NSN) | 4820-00-328-8236 |
| Categorization | Check valves of steel |
| 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 | 0.9lb |
| Thread Class | 3a 1st end |
| Thread Direction | Right-hand 1st end |
| Flow Control Device | Poppet |
| Disk Loading Method | Spring |
| Maximum Operating Temp | 275.0 degrees fahrenheit single response |
| Connection Style | Flareless 2nd end |
| Valve Operation Method | Automatic |
| Connection Type | Threaded external tube 2nd end |
| Mounting Position | Horizontal or vertical |
| Thready Qty Per Inch (tpi) | 18 1st end |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| Thread Size | 0.562 inches 2nd end |
| Seat Angle | 12.0 degrees 2nd end |
| Outside Diameter Tube Accommodated | 0.375 inches 1st end |
| Material | Stainless steel |
| Media For Which Designed | Fuel/oil, hydrocarbon single response |
| Surface Treatment | Passivate |
| Style Designator | Straight thru |
| Thread Series Designator | Unf 2nd end |
Part Numbers
| Part Number | Company | RNAAC (Repair Depot) |
|---|---|---|
| 4R121-117 | ALLEN AIRCRAFT PRODUCTS INC | KE - NAVAL ICP |
| 749831-117 | LOCKHEED MARTIN CORPORATION | ZZ - USA |