Valve, Check4820-01-669-1799

NSN 4820-01-669-1799 · NIIN 016691799 · Part number X01-01G-10FFX

Hy-Grade Valve, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 00DR5

Government record, cited

NSN 4820-01-669-1799 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-669-1799. Manufacturer of record part number: X01-01G-10FFX.

Also searched as 4820-01-669-1799 · 4820016691799 · NIIN 016691799 · 01-669-1799 · FSC 4820 Valves, Nonpowered · CAGE 00DR5 · X01-01G-10FFX

Nearby stock numbers ← 4820-01-669-1736 Valve Assembly · 4820-01-669-1807 Blanking Plate Assembly →

4820-01-669-1799 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Flange Shape: ROUND ALL ENDS
Connection Type: FLANGE ALL ENDS
Style Designator: STRAIGHT THRU FLANGED ENDS
Valve Size: 1.0 INCHES IN
Material: STEEL CORROSION RESISTING BODY
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file

Identification

NSN: 4820-01-669-1799
NIIN: 016691799
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: X01-01G-10FFX
Manufacturer: Hy-Grade Valve, Inc.

General Description

The Valve,check, cataloged under National Stock Number 4820-01-669-1799, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hy-Grade Valve, Inc.. Government technical data includes 6 specifications, 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-669-1799
Primary Part Number	X01-01G-10FFX
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Hy-Grade Valve, Inc.
Status	ACTIVE
Flange Shape	ROUND ALL ENDS
Connection Type	FLANGE ALL ENDS
Style Designator	STRAIGHT THRU FLANGED ENDS
Valve Size	1.0 INCHES IN
Material	STEEL CORROSION RESISTING BODY
Valve Operation Method	AUTOMATIC

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
X01-01G-10FFX PRIMARY	Hy-Grade Valve, Inc. (USA)

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 4820-01-669-1799?

NSN 4820-01-669-1799 is a Valve,check, manufactured by Hy-Grade Valve, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-669-1799?

NSN 4820-01-669-1799 has 1 manufacturer part number on file: X01-01G-10FFX (Hy-Grade Valve, Inc.).

What are the specifications of X01-01G-10FFX?

Key specifications for X01-01G-10FFX: Flange Shape: ROUND ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS; Valve Size: 1.0 INCHES IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-669-1799 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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