The Valve,check, cataloged under National Stock Number 4820-01-723-1401, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is International Valve Corp Dba Check-All Valve Mfg. Co.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | International Valve Corp Dba Check-All Valve Mfg. Co. (CAGE 28396) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-723-1401 |
| Primary Part Number | TVISSVT.125SSNF |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | International Valve Corp Dba Check-All Valve Mfg. Co. |
| 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 |
|---|---|
| TVISSVT.125SSNF PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
| Reference | Meaning |
|---|---|
| NMM000250-007 | 7/2 Vendor item drawing reference Bird-Johnson Propeller Company, Llc |
| NMM110300 | D/9 Drawing number reference only Bird-Johnson Propeller Company, Llc |
| NMM110300 REV J FIND 18 | C/1 Advisory reference — outside the item-of-supply concept Bird-Johnson Propeller Company, Llc |
| NMM000250 | D/9 Drawing number reference only Bird-Johnson Propeller Company, Llc |
NSN 4820-01-723-1401 is a Valve,check, manufactured by International Valve Corp Dba Check-All Valve Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-723-1401 has 1 manufacturer part number on file: TVISSVT.125SSNF (International Valve Corp Dba Check-All Valve Mfg. Co.).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-723-2121, 4820-01-723-2366. 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.