The Valve,check, cataloged under National Stock Number 4820-01-631-9532, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Spectrum Associates, Inc.. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-631-9532 |
| Primary Part Number | 14170-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Spectrum Associates, Inc. |
| Status | ACTIVE |
| Connection Style | GASKET SEAL (TUBE) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Nominal Thread Size | 2.0 INCHES SECOND END IN |
| Thread Class | 2A SECOND END A |
| Thread Quantity Per Inch | 16 SECOND END |
| Thread Series Designator | UN SECOND END |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 14170-3 PRIMARY | Spectrum Associates, Inc. (USA) |
| 70307-83804-103 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 4820-01-631-9532 is a Valve,check, manufactured by Spectrum Associates, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-631-9532 has 2 manufacturer part numbers on file: 14170-3 (Spectrum Associates, Inc.), 70307-83804-103 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 14170-3: Connection Style: GASKET SEAL (TUBE) SECOND END; Connection Type: THREADED EXTERNAL TUBE SECOND END; Nominal Thread Size: 2.0 INCHES SECOND END IN; Part Name Assigned by Controlling Agency: VALVE,BREAKAWAY. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.