The Valve,safety Relief, cataloged under National Stock Number 4820-00-825-5720, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Droitcour Co. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-825-5720 |
| Primary Part Number | 1437 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Droitcour Co |
| Status | ACTIVE |
| Thread Series Designator | UNF FIRST END |
| Operating Pressure | 3850.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Thread Quantity Per Inch | 18 FIRST END |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Features Provided | VALVE STEM LOCK SHIELD |
| Thread Class | 3B FIRST END |
| Adjustable Pressure Range | +2300.0 TO 3850.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Connection Style | GASKET SEAL(BOSS) FIRST END |
| Valve Discharge Flow Rate | 7.0 GALLONS PER MINUTE |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Style Designator | STRAIGHT THRU |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Disk Loading Method | SPRING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1437 | Droitcour Co (USA) |
| 1100-5 | Pneumatics Inc (USA) |
| 1702-14 | Droitcour Co (USA) |
| AN6279-6 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| MS28893-D6 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-V-8813 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 1100-5 | Pneudraulics, Inc. (USA) |
NSN 4820-00-825-5720 is a Valve,safety Relief, manufactured by Droitcour Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-825-5720 has 7 cross-referenced part numbers: 1437 (Droitcour Co), 1100-5 (Pneumatics Inc), 1702-14 (Droitcour Co), AN6279-6 (Aeronautical Standards Group Dept of Navy and Air Force), MS28893-D6 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.
There are 12 known substitutes for 4820-00-825-5720: 2920-00-133-9890, 5999-00-146-8626, 5999-00-168-9000 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1437: Thread Series Designator: UNF FIRST END; Operating Pressure: 3850.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Thread Direction: RIGHT-HAND FIRST END; Thread Quantity Per Inch: 18 FIRST END. 16 total characteristics are documented in the Federal Logistics Information System.