The Parts Kit,check Valve, cataloged under National Stock Number 4820-01-440-5046, 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 5 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 | 4820-01-440-5046 |
| Primary Part Number | 887905 |
| Item Name | Parts Kit,check Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Component Quantity | 2 |
| End Item Source | 79227 |
| Model Number | 709 |
| Supply Items and Quantities | DISK 1; COVER O-RING 1 |
| Document Source | 79227 |
| 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 |
|---|---|
| 887905 RK 709 RC4 3IN | Watts Regulator Company (USA) |
| 887905 PRIMARY | Watts Regulator Company (USA) |
NSN 4820-01-440-5046 is a Parts Kit,check Valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-440-5046 has 2 manufacturer part numbers on file: 887905 RK 709 RC4 3IN (Watts Regulator Company), 887905 (Watts Regulator Company).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-654-8957. Verify interchangeability with system specifications before substitution.
Key specifications for 887905: Component Quantity: 2; End Item Source: 79227; Model Number: 709; Supply Items and Quantities: DISK 1; COVER O-RING 1. 5 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.