Valve, Restrictor Check4820-01-576-9831

NSN 4820-01-576-9831 · NIIN 015769831 · Part number 18735A

Nexen Group Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 5GTF9

Government record, cited

NSN 4820-01-576-9831 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-576-9831. Manufacturer of record part number: 18735A.

Also searched as 4820-01-576-9831 · 4820015769831 · NIIN 015769831 · 01-576-9831 · FSC 4820 Valves, Nonpowered · CAGE 5GTF9 · 18735A · L-20175-G-0406 ITEM 22.23

Nearby stock numbers ← 4820-01-576-9664 Valve, Safety Relief · 4820-01-576-9855 Valve, Regulating, Temperature →

4820-01-576-9831 — Valves, Nonpowered

Features

Valve,restrictor Check — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Nexen Group Inc.

Identification

NSN: 4820-01-576-9831
NIIN: 015769831
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 18735A
Manufacturer: Nexen Group Inc.

General Description

The Valve,restrictor Check, cataloged under National Stock Number 4820-01-576-9831, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nexen Group Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-576-9831
Primary Part Number	18735A
Item Name	Valve,restrictor Check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Nexen Group Inc.
Status	ACTIVE

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
18735A PRIMARY	Nexen Group Inc. (USA)
L-20175-G-0406 ITEM 22.23	Nexen Marketingdiv of Nexen Inc (CAN)

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 4820-01-576-9831?

NSN 4820-01-576-9831 is a Valve,restrictor Check, manufactured by Nexen Group Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-576-9831?

NSN 4820-01-576-9831 has 2 manufacturer part numbers on file: 18735A (Nexen Group Inc.), L-20175-G-0406 ITEM 22.23 (Nexen Marketingdiv of Nexen Inc).

What are the specifications of 18735A?

Key specifications for 18735A: End Item Identification: 2530-01-573-4724 BRAKE, SSE-600, 35 MM BORE, 6 SPRING MM. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-576-9831 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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