The Valve Assembly, cataloged under National Stock Number 4820-00-653-7575, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Defense & Development Enterprises Llc. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-653-7575 |
| Primary Part Number | 19660-2 |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Defense & Development Enterprises Llc |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL PIPE |
| Nominal Thread Size | 0.100 INCHES IN |
| Body Material | RUBBER |
| Thread Series Designator | NPT |
| 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 |
|---|---|
| 19660-2 PRIMARY | Defense & Development Enterprises Llc (USA) |
| Reference | Meaning |
|---|---|
| 19660-2 | 3/9 Design control — primary reference Triumph Thermal Systems - Maryland, Inc. |
| 19660-2 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-653-7575 is a Valve Assembly, manufactured by Defense & Development Enterprises Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-653-7575 has 1 manufacturer part number on file: 19660-2 (Defense & Development Enterprises Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-417-8612. Verify interchangeability with system specifications before substitution.
Key specifications for 19660-2: Connection Type: THREADED INTERNAL PIPE; Nominal Thread Size: 0.100 INCHES IN; Body Material: RUBBER; Thread Series Designator: NPT. 4 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.