The Valve,check, cataloged under National Stock Number 4820-01-430-7301, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Evac North America Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-430-7301 |
| Primary Part Number | 5500372-004 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Evac North America Inc |
| Status | ACTIVE |
| Mounting Position | VERTICAL |
| Mounting Facility | WAFER |
| Media for Which Designed | WASTE PRODUCT SINGLE RESPONSE |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 5500372-004 PRIMARY | Evac North America Inc (USA) |
| Reference | Meaning |
|---|---|
| 0122 FIG5-1 IT7 | C/1 Advisory reference — outside the item-of-supply concept Envirovac Inc Dba Monogram Systems-Rockford Div |
| 5500372-004 | 5/9 Secondary reference Envirovac Inc Dba Monogram Systems-Rockford Div |
NSN 4820-01-430-7301 is a Valve,check, manufactured by Evac North America Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-430-7301 has 1 manufacturer part number on file: 5500372-004 (Evac North America Inc).
Key specifications for 5500372-004: Mounting Position: VERTICAL; Mounting Facility: WAFER; Special Features: 4.000 IN. SIZE IN; Media for Which Designed: WASTE PRODUCT SINGLE RESPONSE. 4 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.