Valve, Safety Relief4820-01-263-9661

NSN 4820-01-263-9661 · NIIN 012639661 · Part number 26HB10-120 S/N 14618-19-ALL

Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 72352

Government record, cited

NSN 4820-01-263-9661 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-263-9661. Manufacturer of record part number: 26HB10-120 S/N 14618-19-ALL.

Also searched as 4820-01-263-9661 · 4820012639661 · NIIN 012639661 · 01-263-9661 · FSC 4820 Valves, Nonpowered · CAGE 72352 · 26HB10-120 S/N 14618-19-ALL

Nearby stock numbers ← 4820-01-263-9660 Valve, Safety Relief · 4820-01-263-9705 Piston, Valve →

4820-01-263-9661 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Flow Control Device: DISK
Flange Shape: ROUND WITH HOLES ALL ENDS
Flange Face Design: RAISED STRAIGHT ALL ENDS
Bolt Circle Nominal Diameter: 3.875 INCHES SECOND END IN
Bolt Circle Nominal Diameter: 6.000 INCHES FIRST END IN
Connection Type: FLANGE ALL ENDS
Style Designator: STRAIGHT THRU FLANGED ENDS

Identification

NSN: 4820-01-263-9661
NIIN: 012639661
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 26HB10-120 S/N 14618-19-ALL
Manufacturer: Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-263-9661, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-263-9661
Primary Part Number	26HB10-120 S/N 14618-19-ALL
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Status	ACTIVE
Flow Control Device	DISK
Flange Shape	ROUND WITH HOLES ALL ENDS
Flange Face Design	RAISED STRAIGHT ALL ENDS
Bolt Circle Nominal Diameter	3.875 INCHES SECOND END IN
Bolt Circle Nominal Diameter	6.000 INCHES FIRST END IN
Connection Type	FLANGE ALL ENDS
Style Designator	STRAIGHT THRU FLANGED ENDS
Bolt Hole Nominal Diameter	0.625 INCHES SECOND END IN
Bolt Hole Nominal Diameter	0.750 INCHES FIRST END IN
Valve Size	1.500 INCHES IN
Nominal Outside Diameter	5.000 INCHES SECOND END IN
Nominal Outside Diameter	7.500 INCHES FIRST END IN
Bolt Hole Quantity	4 ALL ENDS
Material	STEEL 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

Part Number	Manufacturer
26HB10-120 S/N 14618-19-ALL PRIMARY	Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (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 4820-01-263-9661?

NSN 4820-01-263-9661 is a Valve,safety Relief, manufactured by Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-263-9661?

NSN 4820-01-263-9661 has 1 manufacturer part number on file: 26HB10-120 S/N 14618-19-ALL (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris).

What are the specifications of 26HB10-120 S/N 14618-19-ALL?

Key specifications for 26HB10-120 S/N 14618-19-ALL: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 3.875 INCHES SECOND END IN. 15 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-263-9661 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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