NSN 4820-01-375-1477 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-375-1477. Manufacturer of record part number: 2515W440.
Also searched as4820-01-375-1477 ·
4820013751477 ·
NIIN 013751477 ·
01-375-1477 ·
FSC 4820 Valves, Nonpowered · CAGE 0GD25 · 2515W440
Nonsupply Items and Quantities: DIAPHRAGM 2,DIAPRAGM SUPPORT PLATE 4,PIN 1,RETAINING RING 2
2 manufacturer part numbers on file
Manufacturer of record: Allied Defense Industries, Llc Dba Ams Distribution
Identification
NSN: 4820-01-375-1477
NIIN: 013751477
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2515W440
Manufacturer: Allied Defense Industries, Llc Dba Ams Distribution
General Description
The Diaphragm Set,packless Valve, cataloged under National Stock Number 4820-01-375-1477, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Defense Industries, Llc Dba Ams Distribution. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-375-1477
Primary Part Number
2515W440
Item Name
Diaphragm Set,packless Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Allied Defense Industries, Llc Dba Ams Distribution
Status
ACTIVE
Component Quantity
9
Nonsupply Items and Quantities
DIAPHRAGM 2,DIAPRAGM SUPPORT PLATE 4,PIN 1,RETAINING RING 2
Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR)
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 4820-01-375-1477?
NSN 4820-01-375-1477 is a Diaphragm Set,packless Valve, manufactured by Allied Defense Industries, Llc Dba Ams Distribution, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-375-1477?
NSN 4820-01-375-1477 has 2 manufacturer part numbers on file: 2515W440 (Allied Defense Industries, Llc Dba Ams Distribution), 2515W440 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil).
What are the specifications of 2515W440?
Key specifications for 2515W440: Component Quantity: 9; Nonsupply Items and Quantities: DIAPHRAGM 2,DIAPRAGM SUPPORT PLATE 4,PIN 1,RETAINING RING 2; End Item Identification: AIRCRAFT, B-2 BOMBER. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-375-1477 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.
What is the DEMIL code for NSN 4820-01-375-1477?
NSN 4820-01-375-1477 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.