The Valve,air Venting,steam, cataloged under National Stock Number 4520-01-313-2905, 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 Spirax Sarco Inc Dba Spirax Sarco. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-313-2905 |
| Primary Part Number | 57847 |
| Item Name | Valve,air Venting,steam |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Spirax Sarco Inc Dba Spirax Sarco |
| Status | ACTIVE |
| Valve Shape | STRAIGHT W/FEMALE TAPPED DRIP CONNECTION |
| Valve Type | QUICK AIR VENT |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 57847 PRIMARY | Spirax Sarco Inc Dba Spirax Sarco (USA) |
| Reference | Meaning |
|---|---|
| J-969PC7 | 5/9 Secondary reference Spirax Sarco Inc Dba Spirax Sarco |
NSN 4520-01-313-2905 is a Valve,air Venting,steam, manufactured by Spirax Sarco Inc Dba Spirax Sarco, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-313-2905 has 1 manufacturer part number on file: 57847 (Spirax Sarco Inc Dba Spirax Sarco).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-446-5867, 9999-01-690-6538. Verify interchangeability with system specifications before substitution.
Key specifications for 57847: Valve Shape: STRAIGHT W/FEMALE TAPPED DRIP CONNECTION; Special Features: W/DIAPHRAGM; CRES SEAT AND BALL HEAD; Valve Type: QUICK AIR VENT; Material: STEEL CORROSION RESISTING. 3 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.