The Valve,safety Relief, cataloged under National Stock Number 4820-00-837-0210, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-837-0210 |
| Primary Part Number | 2R2220 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crissair Inc Div Esco Technologies |
| Status | ACTIVE |
| Thread Quantity Per Inch | 18 FIRST END |
| Material | ALUMINUM ALLOY SEAT |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES SECOND END |
| Opening Pressure Setting | 100.0 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Flow Control Device | DISK |
| Thread Series Designator | UNF FIRST END |
| Disk Loading Method | SPRING |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Direction | RIGHT-HAND SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNF SECOND END |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Thread Quantity Per Inch | 20 SECOND END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-837-0210 is a Valve,safety Relief, manufactured by Crissair Inc Div Esco Technologies, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-837-0210 has 3 cross-referenced part numbers: P132 (Ausco Inc), 50089 (Mission Systems Davenport Inc.), 2R2220 (Crissair Inc Div Esco Technologies).
There are 5 known substitutes for 4820-00-837-0210: 2510-00-100-2699, 9540-00-254-1205, 1005-00-600-4669 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2R2220: Thread Quantity Per Inch: 18 FIRST END; Material: ALUMINUM ALLOY SEAT; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES SECOND END IN; Seat Angle: 37.0 DEGREES SECOND END. 18 total characteristics are documented in the Federal Logistics Information System.