The Valve,safety Relief, cataloged under National Stock Number 4820-00-822-8342, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 12 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-822-8342 |
| Primary Part Number | P9-644 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Circor Aerospace, Inc. Dba Circor Aerospace Inc |
| Status | ACTIVE |
| Nominal Thread Size | 0.125 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Thread Series Designator | NPT FIRST END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Material | COPPER ALLOY BODY |
| Thread Quantity Per Inch | 27 FIRST END |
| Nominal Pipe Size Accommodated | 0.125 INCHES FIRST END IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Material | COPPER ALLOY SEAT |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Material | COPPER ALLOY STEM |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-822-8342 is a Valve,safety Relief, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-822-8342 has 2 cross-referenced part numbers: 131090 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), P9-644 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).
There are 4 known substitutes for 4820-00-822-8342: 2810-00-393-7664, 5330-00-423-4792, 5810-00-565-8035 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for P9-644: Nominal Thread Size: 0.125 INCHES FIRST END IN; Disk Loading Method: SPRING; Thread Series Designator: NPT FIRST END; Connection Type: THREADED EXTERNAL PIPE FIRST END. 12 total characteristics are documented in the Federal Logistics Information System.