The Valve,check, cataloged under National Stock Number 4820-01-645-2483, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Envirovac Inc Dba Monogram Systems-Rockford Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-645-2483 |
| Primary Part Number | 7601263 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Envirovac Inc Dba Monogram Systems-Rockford Div |
| Status | ACTIVE |
| Minimum Operating Temp | -65.00 FAHRENHEIT DEGF |
| Operating Pressure | 600.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 165.00 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | WATER, FRESH FIRST RESPONSE |
| Media for Which Designed | AIR SECOND RESPONSE |
| Material | STEEL COMP 316 BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7601263 PRIMARY | Envirovac Inc Dba Monogram Systems-Rockford Div (USA) |
| Reference | Meaning |
|---|---|
| 201427823-01 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4820-01-645-2483 is a Valve,check, manufactured by Envirovac Inc Dba Monogram Systems-Rockford Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-645-2483 has 1 manufacturer part number on file: 7601263 (Envirovac Inc Dba Monogram Systems-Rockford Div).
Key specifications for 7601263: Minimum Operating Temp: -65.00 FAHRENHEIT DEGF; Operating Pressure: 600.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 165.00 FAHRENHEIT SINGLE RESPONSE DEGF; Media for Which Designed: WATER, FRESH FIRST RESPONSE. 6 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.
NSN 4820-01-645-2483 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.