NSN 4820-01-259-8951 · NIIN 012598951 · Part number 1700W 4IN ITEM 3
Robert H Wager Co Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79128
Government record, cited
NSN 4820-01-259-8951 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-259-8951. Manufacturer of record part number: 1700W 4IN ITEM 3.
The Valve,vent, cataloged under National Stock Number 4820-01-259-8951, 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 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-259-8951
Primary Part Number
1700W 4IN ITEM 3
Item Name
Valve,vent
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Robert H Wager Co Inc
Status
ACTIVE
Material
COPPER ALLOY BODY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-260-25661700W 3INPOSSIBLE MATCH
VALVE,VENT
Possible match (shared part number)Robert H Wager Co Inc
4820-01-260-2573841-SSPOSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Robert H Wager Co Inc
4820-01-260-25841700W 3IN ITEM 3POSSIBLE MATCH
VALVE,VENT
Possible match (shared part number)Robert H Wager Co Inc
4820-01-285-62021700W-5IN ITEM 6POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Robert H Wager Co Inc
4820-01-333-3942836MPOSSIBLE MATCH
FLOAT,VALVE
Possible match (shared part number)Robert H Wager Co Inc
4820-01-384-88682IN-1700-WSGPOSSIBLE MATCH
VALVE,VENT
Possible match (shared part number)Robert H Wager Co Inc
NSN 4820-01-259-8951 is a Valve,vent, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-259-8951?
NSN 4820-01-259-8951 has 1 manufacturer part number on file: 1700W 4IN ITEM 3 (Robert H Wager Co Inc).
What NSN replaces 4820-01-259-8951?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-260-2566, 4820-01-260-2573, 4820-01-260-2584. Verify interchangeability with system specifications before substitution.
What are the specifications of 1700W 4IN ITEM 3?
Key specifications for 1700W 4IN ITEM 3: Material: COPPER ALLOY BODY. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-259-8951 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.