The Valve,check, cataloged under National Stock Number 4820-01-532-4777, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Delaware Mfg Industries Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-532-4777 |
| Primary Part Number | CVH050750S22 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Delaware Mfg Industries Corp |
| Status | ACTIVE |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 10000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Material | STEEL BODY |
| Thread Series Designator | PTF-SAE SHORT ALL ENDS |
| Opening Pressure Setting | 5.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| CVH050750S22 PRIMARY | Delaware Mfg Industries Corp (USA) |
| Reference | Meaning |
|---|---|
| CVH050750S21 | 3/9 Design control — primary reference Delaware Mfg Industries Corp |
NSN 4820-01-532-4777 is a Valve,check, manufactured by Delaware Mfg Industries Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-532-4777 has 1 manufacturer part number on file: CVH050750S22 (Delaware Mfg Industries Corp).
Key specifications for CVH050750S22: Connection Style: GASKET SEAL (BOSS) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU; Operating Pressure: 10000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 10 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.