NSN 4820-01-323-2040 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-323-2040. Manufacturer of record part number: 9515031.
Also searched as4820-01-323-2040 ·
4820013232040 ·
NIIN 013232040 ·
01-323-2040 ·
FSC 4820 Valves, Nonpowered · CAGE 39VG9 · 9515031
The Valve,safety Relief, cataloged under National Stock Number 4820-01-323-2040, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
Catalog Facts
Item Name
Valve,safety Relief
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Valley Power Systems Inc (CAGE 01PB5); Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (CAGE 39VG9)
Technical Specifications
Parameter
Value
NSN
4820-01-323-2040
Primary Part Number
9515031
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc
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 4820-01-323-2040?
NSN 4820-01-323-2040 is a Valve,safety Relief, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-323-2040?
NSN 4820-01-323-2040 has 2 manufacturer part numbers on file: 9515031 (Valley Power Systems Inc), 9515031 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc).
Is NSN 4820-01-323-2040 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.