The Stem,fluid Valve, cataloged under National Stock Number 4820-01-407-3625, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 4 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. 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 | 4820-01-407-3625 |
| Primary Part Number | 1029035 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 DISK AND 1 BUSHING |
| Valve Type for Which Designed | REGULATOR |
| Valve Model Number for Which Designed | 252A A |
| Valve Size for Which Designed | 0.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-407-3625 is a Stem,fluid Valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-407-3625 has 2 manufacturer part numbers on file: 1029035 (Watts Regulator Company), SA152B29 (Watts Regulator Company).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-680-2406. Verify interchangeability with system specifications before substitution.
Key specifications for 1029035: Furnished Items and Quantity: 1 DISK AND 1 BUSHING; Valve Type for Which Designed: REGULATOR; Valve Model Number for Which Designed: 252A A; Valve Size for Which Designed: 0.750 INCHES IN. 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.