Valve, Check4820-01-441-9142

NSN 4820-01-441-9142 · NIIN 014419142 · Part number 1637-01-8

Ashland Inc. Dba Ashland Water Technologies · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 52454

Government record, cited

NSN 4820-01-441-9142 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-441-9142. Manufacturer of record part number: 1637-01-8.

Also searched as 4820-01-441-9142 · 4820014419142 · NIIN 014419142 · 01-441-9142 · FSC 4820 Valves, Nonpowered · CAGE 52454 · 1637-01-8 · 91200 MS

Nearby stock numbers ← 4820-01-441-9081 Seat, Valve · 4820-01-441-9143 Valve, Float →

4820-01-441-9142 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Material: STEEL CORROSION RESISTING BODY
1 manufacturer part number on file
Manufacturer of record: Ashland Inc. Dba Ashland Water Technologies

Identification

NSN: 4820-01-441-9142
NIIN: 014419142
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1637-01-8
Manufacturer: Ashland Inc. Dba Ashland Water Technologies

General Description

The Valve,check, cataloged under National Stock Number 4820-01-441-9142, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashland Inc. Dba Ashland Water Technologies. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-441-9142
Primary Part Number	1637-01-8
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Ashland Inc. Dba Ashland Water Technologies
Status	ACTIVE
Material	STEEL CORROSION RESISTING 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

Cross-Reference Index

Part Number	Manufacturer
1637-01-8 PRIMARY	Ashland Inc. Dba Ashland Water Technologies (USA)

Reference documents

Reference	Meaning
91200 MS	D/9 Drawing number reference only Ashland Inc. Dba Ashland Water Technologies

Frequently Asked Questions

What is NSN 4820-01-441-9142?

NSN 4820-01-441-9142 is a Valve,check, manufactured by Ashland Inc. Dba Ashland Water Technologies, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-441-9142?

NSN 4820-01-441-9142 has 1 manufacturer part number on file: 1637-01-8 (Ashland Inc. Dba Ashland Water Technologies).

What are the specifications of 1637-01-8?

Key specifications for 1637-01-8: Special Features: VALVE SIZE 3/8 IN. IN; End Item Identification: SERIES 200 POLYTANK SIMPLEX PUMP;DREW CHEMICAL CORP,P/N 0954017;STRATEGIC SEALIFT CONVERSION CLASS SHIPS; Material: STEEL CORROSION RESISTING BODY. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-441-9142 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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