NSN 4820-00-073-1775 Repair Services
Safety Relief Valve Overhaul, Repair, and Maintenance
MPN: 1A057-1, 1A057
Pricing and Lead Time Quote
Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-073-1775 safety relief 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 4820-00-073-1775 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 4820-00-073-1775 can be offered in repaired, serviceable, overhauled, or inspected conditions.| National Stock Number (NSN) | 4820-00-073-1775 |
| Categorization | Safety or relief valves |
| Repairability Code |
F
If condemned or uneconomically repairable , then dispose at direct support (ds) level. |
| Approximate Weight | 0.6lb |
| Thread Class | 3b 1st end |
| Thread Direction | Right-hand 1st end |
| Bonnet Type | Inside spring |
| Bonnet Attachment Method | Pressure seal, ring type |
| Disk Loading Method | Spring |
| Valve Discharge Flow Rate | 1.0 gallons per minute |
| Connection Style | Gasket sea (boss) 1st end |
| Valve Operation Method | Manual |
| Connection Type | Threaded internal boss 1st end |
| Features Provided | Bonnet packing and pressure tight outlet side |
| Thready Qty Per Inch (tpi) | 20 1st end |
| Adjustable Pressure Range | +3000.0/+4000.0 pounds per square inch |
| Maximum Operating Pressure | 4000.0 pounds per square inch single response |
| Thread Size | 0.437 inches 1st end |
| Opening Pressure Setting | 4000.0 pounds per square inch |
| Special Features | Reverse flow |
| Media For Which Designed | Hydraulic fluid, phosphate-ester base single response |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625, type 2 military specification single treatment response |
| Thread Series Designator | Unf 1st end |
Part Numbers
| Part Number | Company | RNAAC (Repair Depot) |
|---|---|---|
| 1A057-1 | ARKWIN INDUSTRIES, INC. | SB - 645 MSSQ/MSIAPCS |
| 1A057 | ARKWIN INDUSTRIES, INC. | SB - 645 MSSQ/MSIAPCS |