The Valve,air Venting,steam, cataloged under National Stock Number 4520-00-203-1018, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Itt Fluid Technology Corp Itt Mcdonnell and Miller. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-203-1018 |
| Primary Part Number | 75 |
| Item Name | Valve,air Venting,steam |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Itt Fluid Technology Corp Itt Mcdonnell and Miller |
| Status | ACTIVE |
| Valve Air Return Prevention | REQUIRED |
| Valve Connection Size | 0.750 INCHES IN |
| Valve Water Pressure Position | CLOSED |
| Operating Pressure | 10.0 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 |
| Part Number | Manufacturer |
|---|---|
| 75 PRIMARY | Itt Fluid Technology Corp Itt Mcdonnell and Miller (USA) |
NSN 4520-00-203-1018 is a Valve,air Venting,steam, manufactured by Itt Fluid Technology Corp Itt Mcdonnell and Miller, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-203-1018 has 1 manufacturer part number on file: 75 (Itt Fluid Technology Corp Itt Mcdonnell and Miller).
Key specifications for 75: Valve Air Return Prevention: REQUIRED; Valve Connection Size: 0.750 INCHES IN; Valve Water Pressure Position: CLOSED; Operating Pressure: 10.0 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.