NSN 4820-01-320-4556 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-320-4556. Manufacturer of record part number: 799205615-001.
Nearby stock numbers← 4820-01-320-3794 Sleeve and Slide, Directional Con
·
4820-01-320-4557 Cock, Drain →
4820-01-320-4556 — Valves, Nonpowered
Features
Valve,safety Relief — FSC 4820
Style Designator: STRAIGHT THRU
Maximum Operating Temp: 71.0 CELSIUS SINGLE RESPONSE DEGC
Material: ALUMINUM ALLOY 2024 BODY
1 manufacturer part number on file
Manufacturer of record: Lockheed Martin Corporation
Identification
NSN: 4820-01-320-4556
NIIN: 013204556
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 799205615-001
Manufacturer: Lockheed Martin Corporation
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-320-4556, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
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 4820-01-320-4556?
NSN 4820-01-320-4556 is a Valve,safety Relief, manufactured by Lockheed Martin Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-320-4556?
NSN 4820-01-320-4556 has 1 manufacturer part number on file: 799205615-001 (Lockheed Martin Corporation).
What are the specifications of 799205615-001?
Key specifications for 799205615-001: Style Designator: STRAIGHT THRU; Maximum Operating Temp: 71.0 CELSIUS SINGLE RESPONSE DEGC; Material: ALUMINUM ALLOY 2024 BODY. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-320-4556 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.