The Valve,check, cataloged under National Stock Number 4820-01-439-7459, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rolls-Royce Marine North America Inc.. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Rolls-Royce Marine North America Inc. (CAGE 38ZC7); Rolls-Royce Corporation (CAGE 63005); International Valve Corp Dba Check-All Valve Mfg. Co. (CAGE 28396) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-439-7459 |
| Primary Part Number | 23059087-06 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rolls-Royce Marine North America Inc. |
| 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 |
|---|---|
| 23059087-06 PRIMARY | Rolls-Royce Marine North America Inc. (USA) |
| 23059008 ITEM 75 | Rolls-Royce Corporation (USA) |
| TFHSSVT5.00SS PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
| Reference | Meaning |
|---|---|
| 23059087-06 | 5/9 Secondary reference Rolls-Royce Corporation |
| 23059087 | 7/1 Vendor item drawing reference Rolls-Royce Corporation |
| TCVF-100-SS-V-5 | 3/9 Design control — primary reference International Valve Corp Dba Check-All Valve Mfg. Co. |
| 23059008 | D/9 Drawing number reference only Rolls-Royce Corporation |
NSN 4820-01-439-7459 is a Valve,check, manufactured by Rolls-Royce Marine North America Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-439-7459 has 3 manufacturer part numbers on file: 23059087-06 (Rolls-Royce Marine North America Inc.), 23059008 ITEM 75 (Rolls-Royce Corporation), TFHSSVT5.00SS (International Valve Corp Dba Check-All Valve Mfg. Co.).
3 possible matches (shared part number, not a government interchangeability claim): 4720-01-439-7508, 4820-01-439-8337, 4820-01-439-9727. Verify interchangeability with system specifications before substitution.
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.