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NSN 4820-01-237-6903Government record, cited

Valve, Check4820-01-237-6903

NSN 4820-01-237-6903 · NIIN 012376903

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-237-6903 · 4820012376903 · NIIN 012376903 · 01-237-6903 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-237-6901 Valve, Globe · 4820-01-237-6904 Valve, Check →

4820-01-237-6903 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Flow Control Device: DISK
Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN
Connection Style: SOCKET (PIPE) ALL ENDS
Mounting Position: HORIZONTAL OR VERTICAL
Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
Style Designator: STRAIGHT THRU
Material Document and Classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY

Identification

NSN: 4820-01-237-6903
NIIN: 012376903
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,check, cataloged under National Stock Number 4820-01-237-6903, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-237-6903
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	DISK
Nominal Pipe Size Accommodated	0.500 INCHES ALL ENDS IN
Connection Style	SOCKET (PIPE) ALL ENDS
Mounting Position	HORIZONTAL OR VERTICAL
Connection Type	UNTHREADED INTERNAL PIPE ALL ENDS
Style Designator	STRAIGHT THRU
Material Document and Classification	ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY
Operating Pressure	800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Material	STEEL UNS K03504 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

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

Reference documents

Reference	Meaning
HL61.50IN800LB-SW	3/9 Design control — primary reference Bonney Forge Corp

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 4820-01-237-6903?

NSN 4820-01-237-6903 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-237-6903?

Key specifications for 4820-01-237-6903: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-237-6903 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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