The Valve,check, cataloged under National Stock Number 4820-01-243-0812, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Carrier Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | Carrier Corp (CAGE 10855) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-243-0812 |
| Primary Part Number | 5MH46-709 ITEM 1F |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Carrier Corp |
| 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 |
|---|---|
| 5MH46-709 ITEM 1F PRIMARY | Carrier Corp (USA) |
| 5MH46-742 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 5MH46-709 | D/9 Drawing number reference only Carrier Corp |
NSN 4820-01-243-0812 is a Valve,check, manufactured by Carrier Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-243-0812 has 2 manufacturer part numbers on file: 5MH46-709 ITEM 1F (Carrier Corp), 5MH46-742 (Carrier Corp).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-243-3160, 4130-01-312-3941. 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.