NSN 4820-01-290-7819 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-290-7819. Manufacturer of record part number: 1982C-1 1/2X2.
Adjustable Pressure Range: +0.0 TO 300.0 POUNDS PER SQUARE INCH LBS
Bonnet Type: INSIDE SCREW
Disk Loading Method: SPRING
Bonnet Attachment Method: THREADED
Material: STEEL CORROSION RESISTING BODY
Identification
NSN: 4820-01-290-7819
NIIN: 012907819
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1982C-1 1/2X2
Manufacturer: Ashcroft Inc Dba Heise
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-290-7819, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 8 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.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-290-7819?
NSN 4820-01-290-7819 is a Valve,safety Relief, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-290-7819?
NSN 4820-01-290-7819 has 1 manufacturer part number on file: 1982C-1 1/2X2 (Ashcroft Inc Dba Heise).
What are the specifications of 1982C-1 1/2X2?
Key specifications for 1982C-1 1/2X2: Flow Control Device: DISK; Style Designator: ANGLE; Adjustable Pressure Range: +0.0 TO 300.0 POUNDS PER SQUARE INCH LBS; Bonnet Type: INSIDE SCREW. 8 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-290-7819 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.