Valve, Stop-Check4820-01-221-2949

NSN 4820-01-221-2949 · NIIN 012212949

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-221-2949 · 4820012212949 · NIIN 012212949 · 01-221-2949 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-221-2495 · 4820-01-221-3147 Guide, Valve Stem →

4820-01-221-2949 — Valves, Nonpowered

Features

Valve,stop-Check — FSC 4820
Connection Style: PLAIN (PIPE) FIRST END
Mounting Position: HORIZONTAL
Supplementary Features: FLOW CONTROL DEVICE: STEM
Connection Type: THREADED EXTERNAL PIPE FIRST END
Style Designator: STRAIGHT THRU
Bonnet Type: PACKING RETAINING
Thread Direction: RIGHT-HAND FIRST END

Identification

NSN: 4820-01-221-2949
NIIN: 012212949
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,stop-Check, cataloged under National Stock Number 4820-01-221-2949, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-221-2949
Item Name	Valve,stop-Check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Connection Style	PLAIN (PIPE) FIRST END
Mounting Position	HORIZONTAL
Supplementary Features	FLOW CONTROL DEVICE: STEM
Connection Type	THREADED EXTERNAL PIPE FIRST END
Style Designator	STRAIGHT THRU
Bonnet Type	PACKING RETAINING
Thread Direction	RIGHT-HAND FIRST END
Nominal Thread Size	0.250 INCHES FIRST END IN
Material	ALUMINUM OVERALL
Thread Series Designator	NPT FIRST END
Valve Operation Method	MANUAL

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
893-029-000	3/9 Design control — primary reference Warren Rupp-Houdaille Inc Sub of Houdaille Industries Inc

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 4820-01-221-2949?

NSN 4820-01-221-2949 is a Valve,stop-Check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-221-2949?

Key specifications for 4820-01-221-2949: Connection Style: PLAIN (PIPE) FIRST END; Mounting Position: HORIZONTAL; Supplementary Features: FLOW CONTROL DEVICE: STEM; Connection Type: THREADED EXTERNAL PIPE FIRST END. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-221-2949 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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