Tailpiece, Valve4820-01-185-6731

NSN 4820-01-185-6731 · NIIN 011856731 · Part number V-3161

Portland Valve Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 53154

Government record, cited

NSN 4820-01-185-6731 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-185-6731. Manufacturer of record part number: V-3161.

Also searched as 4820-01-185-6731 · 4820011856731 · NIIN 011856731 · 01-185-6731 · FSC 4820 Valves, Nonpowered · CAGE 53154 · V-3161 · V-7681 PIECE 12

Nearby stock numbers ← 4820-01-185-6724 Screen, Vent, Valve · 4820-01-185-6735 Stem, Fluid Valve →

4820-01-185-6731 — Valves, Nonpowered

Features

Tailpiece,valve — FSC 4820
Material: COPPER ALLOY
2 manufacturer part numbers on file
Manufacturer of record: Portland Valve Llc

Identification

NSN: 4820-01-185-6731
NIIN: 011856731
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: V-3161
Manufacturer: Portland Valve Llc

General Description

The Tailpiece,valve, cataloged under National Stock Number 4820-01-185-6731, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares 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	4820-01-185-6731
Primary Part Number	V-3161
Item Name	Tailpiece,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Portland Valve Llc
Status	ACTIVE
Material	COPPER ALLOY

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 Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5310-01-519-78371HA319 POSSIBLE MATCH

NUT,SELF-LOCKING,HEXAGON

Possible match (shared part number)Oshkosh Defense Llc

Cross-Reference Index

Part Number	Manufacturer
V-7681 PIECE 12	Portland Valve Llc (USA)
V-3161 PRIMARY	Portland Valve Llc (USA)

Related Parts

5310-01-519-7837POSSIBLE MATCH

NUT,SELF-LOCKING,HEXAGON

1HA319

Frequently Asked Questions

What is NSN 4820-01-185-6731?

NSN 4820-01-185-6731 is a Tailpiece,valve, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-185-6731?

NSN 4820-01-185-6731 has 2 manufacturer part numbers on file: V-7681 PIECE 12 (Portland Valve Llc), V-3161 (Portland Valve Llc).

What NSN replaces 4820-01-185-6731?

1 possible match (shared part number, not a government interchangeability claim): 5310-01-519-7837. Verify interchangeability with system specifications before substitution.

What are the specifications of V-3161?

Key specifications for V-3161: Material: COPPER ALLOY. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-185-6731 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.

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