Seat, Valve4820-01-308-6671

NSN 4820-01-308-6671 · NIIN 013086671 · Part number 2553-69-68

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

Government record, cited

NSN 4820-01-308-6671 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-308-6671. Manufacturer of record part number: 2553-69-68.

Also searched as 4820-01-308-6671 · 4820013086671 · NIIN 013086671 · 01-308-6671 · FSC 4820 Valves, Nonpowered · CAGE 57574 · 2553-69-68 · 23399-5 1/2IN PC 7

Nearby stock numbers ← 4820-01-308-6454 Valve, Regulating, Temperature · 4820-01-308-6672 Seat, Valve →

4820-01-308-6671 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 0.342 INCHES MAXIMUM IN
Flange Diameter: 0.719 INCHES NOMINAL IN
Body Outside Diameter: 0.587 INCHES MAXIMUM IN
Style Designator: PLAIN FLANGED
Body Inside Diameter: 0.510 INCHES MAXIMUM IN
Under Flange Height: 0.228 INCHES MAXIMUM IN
Material: STEEL OVERALL

Identification

NSN: 4820-01-308-6671
NIIN: 013086671
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2553-69-68
Manufacturer: Velan Valve Corp.

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-308-6671, 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 9 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	4820-01-308-6671
Primary Part Number	2553-69-68
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Velan Valve Corp.
Status	ACTIVE
Flange Seat to Disk End Height	0.342 INCHES MAXIMUM IN
Flange Diameter	0.719 INCHES NOMINAL IN
Body Outside Diameter	0.587 INCHES MAXIMUM IN
Style Designator	PLAIN FLANGED
Body Inside Diameter	0.510 INCHES MAXIMUM IN
Under Flange Height	0.228 INCHES MAXIMUM IN
Material	STEEL OVERALL
Seat Angle in Deg	7.000 NOMINAL
Seating Surface Shape	ANGULAR

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
2553-69-68 PRIMARY	Velan Valve Corp. (USA)
23399-5 1/2IN PC 7	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 4820-01-308-6671?

NSN 4820-01-308-6671 is a Seat,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-308-6671?

NSN 4820-01-308-6671 has 2 manufacturer part numbers on file: 2553-69-68 (Velan Valve Corp.), 23399-5 1/2IN PC 7 (Velan Valve Corp.).

What are the specifications of 2553-69-68?

Key specifications for 2553-69-68: Flange Seat to Disk End Height: 0.342 INCHES MAXIMUM IN; Flange Diameter: 0.719 INCHES NOMINAL IN; Body Outside Diameter: 0.587 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-308-6671 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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