The Valve,air Venting,steam, cataloged under National Stock Number 4520-00-951-7684, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-951-7684 |
| Item Name | Valve,air Venting,steam |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Valve Air Return Prevention | NOT REQUIRED |
| Valve Connection Size | 0.125 INCHES IN |
| Valve Water Pressure Position | OPEN |
| Operating Pressure | 30.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Valve Shape | STRAIGHT |
| Surface Treatment | NICKEL |
| Valve Type | QUICK AIR VENT |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 423 | 3/9 Design control — primary reference Taco Inc. Div Heat Transfer Products Division |
NSN 4520-00-951-7684 is a Valve,air Venting,steam, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-00-951-7684: Valve Air Return Prevention: NOT REQUIRED; Valve Connection Size: 0.125 INCHES IN; Valve Water Pressure Position: OPEN; Operating Pressure: 30.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. 8 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.