Disk, Valve4820-01-556-1074

NSN 4820-01-556-1074 · NIIN 015561074 · Part number 7535-727-146

Velan Valve Corp. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 57574

Government record, cited

NSN 4820-01-556-1074 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-556-1074. Manufacturer of record part number: 7535-727-146.

Also searched as 4820-01-556-1074 · 4820015561074 · NIIN 015561074 · 01-556-1074 · FSC 4820 Valves, Nonpowered · CAGE 57574 · 7535-727-146 · 73811-13 IT NO 03B 6.0IN

Nearby stock numbers ← 4820-01-556-0855 Deck Box Operator, Valve · 4820-01-556-1088 Valve, Linear, Directional Control →

4820-01-556-1074 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Shank Diameter: 0.590 INCHES NOMINAL IN
Flange Seat to Disk End Height: 1.344 INCHES NOMINAL IN
Outside Diameter: 6.880 INCHES NOMINAL IN
Style Designator: SWING CHECK
Material Document and Classification: ASTM A217 TY CA-15 ASSN STD SINGLE MATERIAL RESPONSE
Nominal Thread Size: 0.750 INCHES IN
Thread Quantity Per Inch: 10

Identification

NSN: 4820-01-556-1074
NIIN: 015561074
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 7535-727-146
Manufacturer: Velan Valve Corp.

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-556-1074, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 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	4820-01-556-1074
Primary Part Number	7535-727-146
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Velan Valve Corp.
Status	ACTIVE
Shank Diameter	0.590 INCHES NOMINAL IN
Flange Seat to Disk End Height	1.344 INCHES NOMINAL IN
Outside Diameter	6.880 INCHES NOMINAL IN
Style Designator	SWING CHECK
Material Document and Classification	ASTM A217 TY CA-15 ASSN STD SINGLE MATERIAL RESPONSE
Nominal Thread Size	0.750 INCHES IN
Thread Quantity Per Inch	10
Material	STEEL CORROSION RESISTING

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
73811-13 IT NO 03B 6.0IN	Velan Valve Corp. (USA)
7535-727-146 PRIMARY	Velan Valve Corp. (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 4820-01-556-1074?

NSN 4820-01-556-1074 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-556-1074?

NSN 4820-01-556-1074 has 2 manufacturer part numbers on file: 73811-13 IT NO 03B 6.0IN (Velan Valve Corp.), 7535-727-146 (Velan Valve Corp.).

What are the specifications of 7535-727-146?

Key specifications for 7535-727-146: Shank Diameter: 0.590 INCHES NOMINAL IN; Flange Seat to Disk End Height: 1.344 INCHES NOMINAL IN; Outside Diameter: 6.880 INCHES NOMINAL IN; Style Designator: SWING CHECK. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-556-1074 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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