The Valve,safety Relief, cataloged under National Stock Number 4820-00-541-5577, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Keen Manufacturing Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-541-5577 |
| Primary Part Number | C131 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Keen Manufacturing Inc |
| Status | CANCELLED |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Thread Series Designator | NPT FIRST END |
| Material | COPPER ALLOY OVERALL |
| Style Designator | STRAIGHT THRU |
| Flow Control Device | DISK |
| Valve Operation Method | AUTOMATIC |
| Thread Direction | RIGHT-HAND FIRST END |
| Disk Loading Method | SPRING |
| Adjustable Pressure Range | +7.0 TO 12.0 POUNDS PER SQUARE INCH LBS |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4820-00-541-5577 is a Valve,safety Relief, manufactured by Keen Manufacturing Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-541-5577 has 3 cross-referenced part numbers: C13C (Keen Manufacturing Inc), P10637 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), C131 (Keen Manufacturing Inc).
There are 5 known substitutes for 4820-00-541-5577: 3120-00-424-0538, 2940-00-505-6710, 4820-00-817-4985 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for C131: Connection Type: THREADED EXTERNAL PIPE FIRST END; Connection Style: PLAIN (PIPE) FIRST END; Operating Pressure: 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Media for Which Designed: AIR SINGLE RESPONSE. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-541-5577 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.