The Valve,vent, cataloged under National Stock Number 4820-01-435-8209, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Robert H Wager Co Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-8209 |
| Primary Part Number | 1.5-1660WSGC |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert H Wager Co Inc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.500 INCHES ALL ENDS IN |
| Connection Style | BEVELED (PIPE) FIRST END |
| Connection Type | BUTT WELD PIPE FIRST END |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | STEEL BODY |
| 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 |
|---|---|
| 1.5-1660WSGC PRIMARY | Robert H Wager Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 1660-WSGC 1 1/2IN | 5/9 Secondary reference Robert H Wager Co Inc |
| 1.50-1660WSGC | C/1 Advisory reference — outside the item-of-supply concept Robert H Wager Co Inc |
NSN 4820-01-435-8209 is a Valve,vent, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-435-8209 has 1 manufacturer part number on file: 1.5-1660WSGC (Robert H Wager Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5335-01-546-7865. Verify interchangeability with system specifications before substitution.
Key specifications for 1.5-1660WSGC: Nominal Pipe Size Accommodated: 1.500 INCHES ALL ENDS IN; Connection Style: BEVELED (PIPE) FIRST END; Connection Type: BUTT WELD PIPE FIRST END; Media for Which Designed: AIR SINGLE RESPONSE. 5 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.