The Seat,check Valve, cataloged under National Stock Number 4820-00-177-0190, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-177-0190 |
| Primary Part Number | 3013442 |
| Item Name | Seat,check Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| General Characteristics Item Description | CRES; LARGE IND 0.341 TO 0.347 IN. DIA,0.365 TO 0.375 IN. LG,GROOVE 0.244 TO 0.246 IN. DIA,0.090 TO 0.100 IN. WIDE,0.080 TO 0.090 IN. FROM END,SMALL END 0.270 TO 0.280 IN. DIA,0.195 TO 0.205 IN. LG,0.560 TO 0.580 IN. O/A LG IN |
| 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 |
|---|---|
| 3013442 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
NSN 4820-00-177-0190 is a Seat,check Valve, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-177-0190 has 1 manufacturer part number on file: 3013442 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 3013442: General Characteristics Item Description: CRES; LARGE IND 0.341 TO 0.347 IN. DIA,0.365 TO 0.375 IN. LG,GROOVE 0.244 TO 0.246 IN. DIA,0.090 TO 0.100 IN. WIDE,0.080 TO 0.090 IN. FROM END,SMALL END 0.270 TO 0.280 IN. DIA,0.195 TO 0.205 IN. LG,0.560 TO 0.580 IN. O/A LG IN. 1 specification is 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.