The Valve Assembly,combination, cataloged under National Stock Number 3655-01-134-8409, is classified within Federal Supply Class 3655 (Gas Generating and Dispensing Systems, Fixed or Mobile) of the Special Industry Machinery group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3655-01-134-8409 |
| Item Name | Valve Assembly,combination |
| FSC / FSG | 3655 / 36 — Gas Generating and Dispensing Systems, Fixed or Mobile |
| Status | ACTIVE |
| General Characteristics Item Description | DIAMETER 3.885 IN.; DEPTH 3.5 IN. CONSISTS OF 2 PLATE P/N D804-1980-23; 1 LOCKNUT,DRAKE 1/2-20 UNF P/N D794-1957-1; 1 VALVE STUD,3 1/8 IN. LG. P/N D794-1903; 1 VALVE GUARD,UPPER P/N D794-1928; 1VALVE SEAT P/N D794-1927; 1 VALVE GUARD,LOWER P/N D794-1926 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| D791-1851 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3655-01-134-8409 is a Valve Assembly,combination, classified under FSC 3655, Gas Generating and Dispensing Systems, Fixed or Mobile. Status: active.
Key specifications for 3655-01-134-8409: General Characteristics Item Description: DIAMETER 3.885 IN.; DEPTH 3.5 IN. CONSISTS OF 2 PLATE P/N D804-1980-23; 1 LOCKNUT,DRAKE 1/2-20 UNF P/N D794-1957-1; 1 VALVE STUD,3 1/8 IN. LG. P/N D794-1903; 1 VALVE GUARD,UPPER P/N D794-1928; 1VALVE SEAT P/N D794-1927; 1 VALVE GUARD,LOWER P/N D794-1926 IN; End Item Identification: 3655010938771. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.