The Valve,check, cataloged under National Stock Number 4820-01-407-9304, 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.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-407-9304 |
| Primary Part Number | CNHSSMT3.60SS |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | International Valve Corp Dba Check-All Valve Mfg. Co. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Material | STEEL COMP 316 BODY |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| CNHSSMT3.60SS PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
| 5830254 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| CON-100-SS-M-3.6 | 5/9 Secondary reference International Valve Corp Dba Check-All Valve Mfg. Co. |
NSN 4820-01-407-9304 is a Valve,check, manufactured by International Valve Corp Dba Check-All Valve Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-407-9304 has 2 manufacturer part numbers on file: CNHSSMT3.60SS (International Valve Corp Dba Check-All Valve Mfg. Co.), 5830254 (Naval Sea Systems Command).
Key specifications for CNHSSMT3.60SS: Flow Control Device: DISK; Connection Style: PLAIN (PIPE) ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: THREADED EXTERNAL PIPE ALL ENDS. 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.