Valve, Safety Relief4820-01-451-0850

NSN 4820-01-451-0850 · NIIN 014510850 · Part number 9310C5026-001

The Entwistle Company Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 20722

Government record, cited

NSN 4820-01-451-0850 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-451-0850. Manufacturer of record part number: 9310C5026-001.

Also searched as 4820-01-451-0850 · 4820014510850 · NIIN 014510850 · 01-451-0850 · FSC 4820 Valves, Nonpowered · CAGE 20722 · 9310C5026-001

Nearby stock numbers ← 4820-01-451-0822 Valve, Linear, Directional Control · 4820-01-451-1029 Valve, Check →

4820-01-451-0850 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Connection Style: PLAIN,OPTIONAL END(PIPE) SECOND END
Connection Style: PLAIN (PIPE) FIRST END
Connection Type: THREADED INTERNAL PIPE SECOND END
Connection Type: THREADED EXTERNAL PIPE FIRST END
Style Designator: ANGLE
Adjustable Pressure Range: +5.0 TO 300.0 POUNDS PER SQUARE INCH LBS
Thread Direction: RIGHT-HAND ALL ENDS

Identification

NSN: 4820-01-451-0850
NIIN: 014510850
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 9310C5026-001
Manufacturer: The Entwistle Company Llc

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-451-0850, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 11 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	4820-01-451-0850
Primary Part Number	9310C5026-001
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	The Entwistle Company Llc
Status	ACTIVE
Connection Style	PLAIN,OPTIONAL END(PIPE) SECOND END
Connection Style	PLAIN (PIPE) FIRST END
Connection Type	THREADED INTERNAL PIPE SECOND END
Connection Type	THREADED EXTERNAL PIPE FIRST END
Style Designator	ANGLE
Adjustable Pressure Range	+5.0 TO 300.0 POUNDS PER SQUARE INCH LBS
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.750 INCHES ALL ENDS IN
Disk Loading Method	SPRING
Thread Series Designator	NPT ALL ENDS
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
9310C5026-001 PRIMARY	The Entwistle Company Llc (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 4820-01-451-0850?

NSN 4820-01-451-0850 is a Valve,safety Relief, manufactured by The Entwistle Company Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-451-0850?

NSN 4820-01-451-0850 has 1 manufacturer part number on file: 9310C5026-001 (The Entwistle Company Llc).

What are the specifications of 9310C5026-001?

Key specifications for 9310C5026-001: Connection Style: PLAIN,OPTIONAL END(PIPE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Connection Type: THREADED INTERNAL PIPE SECOND END; Connection Type: THREADED EXTERNAL PIPE FIRST END. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-451-0850 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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