Valve, Check4820-01-421-5171

NSN 4820-01-421-5171 · NIIN 014215171

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-421-5171 · 4820014215171 · NIIN 014215171 · 01-421-5171 · FSC 4820 Valves, Nonpowered · G15XMP-72 2.00IN · CD0028 2.00 IN

Nearby stock numbers ← 4820-01-421-5170 Valve, Ball · 4820-01-421-5175 Valve, Check →

4820-01-421-5171 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Flange Shape: ROUND ALL ENDS
Flange Face Design: PLAIN ALL ENDS
Mounting Position: HORIZONTAL OR VERTICAL
Connection Type: FLANGE ALL ENDS
Style Designator: STRAIGHT THRU FLANGED ENDS
Operating Pressure: 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Valve Size: 2.000 INCHES IN

Identification

NSN: 4820-01-421-5171
NIIN: 014215171
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,check, cataloged under National Stock Number 4820-01-421-5171, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-421-5171
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flange Shape	ROUND ALL ENDS
Flange Face Design	PLAIN ALL ENDS
Mounting Position	HORIZONTAL OR VERTICAL
Connection Type	FLANGE ALL ENDS
Style Designator	STRAIGHT THRU FLANGED ENDS
Operating Pressure	285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Valve Size	2.000 INCHES IN
Nominal Outside Diameter	4.120 INCHES ALL ENDS IN
Face to Face Distance	2.380 INCHES IN
Material	COPPER ALLOY BODY
Material	RUBBER SEAT
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

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

Reference documents

Reference	Meaning
G15XMP-72 2.00IN	3/2 Design control — primary reference U.S. Government activity
CD0028 2.00 IN	5/2 Secondary reference U.S. Government activity

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 4820-01-421-5171?

NSN 4820-01-421-5171 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-421-5171?

Key specifications for 4820-01-421-5171: Flange Shape: ROUND ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: FLANGE ALL ENDS. 12 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-421-5171 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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