Valve, Safety Relief4820-00-326-7000

NSN 4820-00-326-7000 · NIIN 003267000 · Part number 185315

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 77445

Government record, cited

NSN 4820-00-326-7000 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-326-7000. Manufacturer of record part number: 185315.

Also searched as 4820-00-326-7000 · 4820003267000 · NIIN 003267000 · 00-326-7000 · FSC 4820 Valves, Nonpowered · CAGE 77445 · 185315

Nearby stock numbers ← 4820-00-326-6504 Valve, Regulating, Fluid Pressure · 4820-00-327-0905 Disk, Valve →

4820-00-326-7000 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney

Identification

NSN: 4820-00-326-7000
NIIN: 003267000
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 185315
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-326-7000, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-00-326-7000
Primary Part Number	185315
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Status	ACTIVE

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

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4810-01-509-0241185315 POSSIBLE MATCH

CAP,VALVE

Possible match (shared part number)Setra Systems, Inc. Dba Gems Sensors

Cross-Reference Index

Part Number	Manufacturer
185315 PRIMARY	Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)

Related Parts

4810-01-509-0241POSSIBLE MATCH

CAP,VALVE

185315

Frequently Asked Questions

What is NSN 4820-00-326-7000?

NSN 4820-00-326-7000 is a Valve,safety Relief, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-326-7000?

NSN 4820-00-326-7000 has 1 manufacturer part number on file: 185315 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 4820-00-326-7000?

1 possible match (shared part number, not a government interchangeability claim): 4810-01-509-0241. Verify interchangeability with system specifications before substitution.

What are the specifications of 185315?

Key specifications for 185315: End Item Identification: J-57 AIRCRAFT ENGINE. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-326-7000 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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