PartsTable TECHNICAL DATA SHEET

NSN 4820-01-308-1773Government record, cited

Seat, Valve4820-01-308-1773

NSN 4820-01-308-1773 · NIIN 013081773 · Part number GV-31-954-1

Automatic Switch Company Dba Asco · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04845

Government record, cited

NSN 4820-01-308-1773 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-308-1773. Manufacturer of record part number: GV-31-954-1.

Also searched as 4820-01-308-1773 · 4820013081773 · NIIN 013081773 · 01-308-1773 · FSC 4820 Valves, Nonpowered · CAGE 04845 · GV-31-954-1 · 3160998 PIECE 78 · AV-31-574 PIECE 78 · AV-31-574

Nearby stock numbers ← 4820-01-308-1772 · 4820-01-308-1774 →

4820-01-308-1773 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Material: NICKEL ALLOY SEAT
2 manufacturer part numbers on file
Manufacturer of record: Automatic Switch Company Dba Asco

Identification

NSN: 4820-01-308-1773
NIIN: 013081773
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: GV-31-954-1
Manufacturer: Automatic Switch Company Dba Asco

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-308-1773, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-308-1773
Primary Part Number	GV-31-954-1
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Automatic Switch Company Dba Asco
Status	ACTIVE
Material	NICKEL ALLOY SEAT

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

Cross-Reference Index

Part Number	Manufacturer
AV-31-574 PIECE 78	Automatic Switch Company Dba Asco (USA)
GV-31-954-1 PRIMARY	Automatic Switch Company Dba Asco (USA)

Reference documents

Reference	Meaning
3160998 PIECE 78	5/2 Secondary reference U.S. Government activity
AV-31-574	D/9 Drawing number reference only Automatic Switch Company Dba Asco

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-308-1773?

NSN 4820-01-308-1773 is a Seat,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-308-1773?

NSN 4820-01-308-1773 has 2 manufacturer part numbers on file: AV-31-574 PIECE 78 (Automatic Switch Company Dba Asco), GV-31-954-1 (Automatic Switch Company Dba Asco).

What are the specifications of GV-31-954-1?

Key specifications for GV-31-954-1: Material: NICKEL ALLOY SEAT. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-308-1773 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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