The Parts Kit,check Valve, cataloged under National Stock Number 4820-01-633-1098, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-633-1098 |
| Primary Part Number | LFRK 007M1C |
| Item Name | Parts Kit,check Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| 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 |
|---|---|
| LFRK 007M1C PRIMARY | Watts Regulator Company (USA) |
| 0794004 PRIMARY | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| PL-RP-BPD 1330 PG 4 | 5/9 Secondary reference Watts Regulator Company |
NSN 4820-01-633-1098 is a Parts Kit,check Valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-633-1098 has 2 manufacturer part numbers on file: LFRK 007M1C (Watts Regulator Company), 0794004 (Watts Regulator Company).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-633-1683, 4820-01-633-1689, 5995-01-642-9812. Verify interchangeability with system specifications before substitution.
Key specifications for LFRK 007M1C: Special Features: LEAD FREE; USE ON VALVE SIZE 3/4 IN TO 1 INCH IN; Part Name Assigned by Controlling Agency: COVER KIT. 0 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.