The Valve,vent, cataloged under National Stock Number 4820-01-612-3554, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hdt Expeditionary Systems Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-612-3554 |
| Primary Part Number | 9722-14600 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hdt Expeditionary Systems Inc |
| Status | ACTIVE |
| Connection Style | GASKET SEAL (PIPE) ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | SAFETY RELIEF |
| Operating Pressure | 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 3.05 INCHES IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.50 INCHES ALL ENDS IN |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | PLASTIC BODY |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 9722-1400 REV D FIND NO. 4 | Hdt Expeditionary Systems Inc (USA) |
| 9722-14600 PRIMARY | Hdt Expeditionary Systems Inc (USA) |
| 9722-14600 REV B | Hdt Expeditionary Systems Inc (USA) |
NSN 4820-01-612-3554 is a Valve,vent, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-612-3554 has 3 manufacturer part numbers on file: 9722-1400 REV D FIND NO. 4 (Hdt Expeditionary Systems Inc), 9722-14600 (Hdt Expeditionary Systems Inc), 9722-14600 REV B (Hdt Expeditionary Systems Inc).
Key specifications for 9722-14600: Connection Style: GASKET SEAL (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: SAFETY RELIEF; Operating Pressure: 50.0 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.