The Valve,safety Relief, cataloged under National Stock Number 4820-00-775-9001, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crissair Inc Div Esco Technologies. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-775-9001 |
| Primary Part Number | 2R2200 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crissair Inc Div Esco Technologies |
| Status | ACTIVE |
| Nominal Thread Size | 0.625 INCHES SECOND END IN |
| Connection Style | FLARED (TUBE) FIRST END |
| Disk Loading Method | SPRING |
| Maximum Operating Temp | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Renewable Seat Ring Type | PRESSED-IN |
| Valve Operation Method | AUTOMATIC |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Adjustable Pressure Range | +170.0 TO 180.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE |
| Nominal Thread Size | 0.437 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Valve Discharge Flow Rate | 0.1 CUBIC METERS PER MINUTE |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Thread Series Designator | UNF FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Thread Class | 3A FIRST END A |
| Thread Direction | RIGHT-HAND SECOND END |
| Material | ALUMINUM ALLOY 2024 BODY |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Features Provided | VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE |
| Thread Quantity Per Inch | 24 SECOND END |
| Thread Class | 3A SECOND END A |
| Material | RUBBER SYNTHETIC SEAT |
| Material Document and Classification | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND END IN |
| Opening Pressure Setting | 170.0 POUNDS PER SQUARE INCH LBS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-775-9001 is a Valve,safety Relief, manufactured by Crissair Inc Div Esco Technologies, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-775-9001 has 2 cross-referenced part numbers: 2R2200 (Crissair Inc Div Esco Technologies), 9019642 (Us Army Aviation and Missile Command).
There is 1 known substitute for 4820-00-775-9001: 4720-01-431-1356. Verify interchangeability with system specifications before substitution.
Key specifications for 2R2200: Nominal Thread Size: 0.625 INCHES SECOND END IN; Connection Style: FLARED (TUBE) FIRST END; Disk Loading Method: SPRING; Maximum Operating Temp: 165.0 FAHRENHEIT SINGLE RESPONSE DEGF. 30 total characteristics are documented in the Federal Logistics Information System.