NSN 4820-01-654-4055 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-654-4055. Manufacturer of record part number: NI/13.1-1.50 DN40STRAIGHT 50PSI.
Manufacturer of record: Monarch Supply Company, Inc. Dba Monarch Supply Co Inc
Identification
NSN: 4820-01-654-4055
NIIN: 016544055
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: NI/13.1-1.50 DN40STRAIGHT 50PSI
Manufacturer: Monarch Supply Company, Inc. Dba Monarch Supply Co Inc
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-654-4055, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Monarch Supply Company, Inc. Dba Monarch Supply Co Inc. 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
4820-01-654-4055
Primary Part Number
NI/13.1-1.50 DN40STRAIGHT 50PSI
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Monarch Supply Company, Inc. Dba Monarch Supply Co Inc
Monarch Supply Company, Inc. Dba Monarch Supply Co Inc (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 4820-01-654-4055?
NSN 4820-01-654-4055 is a Valve,safety Relief, manufactured by Monarch Supply Company, Inc. Dba Monarch Supply Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-654-4055?
NSN 4820-01-654-4055 has 1 manufacturer part number on file: NI/13.1-1.50 DN40STRAIGHT 50PSI (Monarch Supply Company, Inc. Dba Monarch Supply Co Inc).
What are the specifications of NI/13.1-1.50 DN40STRAIGHT 50PSI?
Key specifications for NI/13.1-1.50 DN40STRAIGHT 50PSI: Special Features: RELIEF VALVE, 1.50IN STRAIGHT FLOW IN; End Item Identification: USCG 270FT WMEC B CLASS VESSELS FT. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-654-4055 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.