NSN 4820-01-191-8944 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-191-8944. Manufacturer of record part number: N5501 PIECE 102.
The Disk,valve, cataloged under National Stock Number 4820-01-191-8944, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tate Andale, Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-191-8944
Primary Part Number
N5501 PIECE 102
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Tate Andale, Llc
Status
ACTIVE
Taper Major Diameter
2.527 INCHES NOMINAL IN
Seat Angle
12.0 DEGREES NOMINAL
Taper Length
4.625 INCHES NOMINAL IN
Media for Which Designed
OIL
Material
STEEL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-192-6018N5501 PIECE 175POSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)Tate Andale, Llc
4730-01-194-0130N5501 PIECE 143POSSIBLE MATCH
ADAPTER,STRAIGHT,PIPE TO TUBE
Possible match (shared part number)Tate Andale, Llc
4820-01-196-5170N5501 PIECE 139POSSIBLE MATCH
COCK,DRAIN
Possible match (shared part number)Tate Andale, Llc
4420-01-196-5369N5501 PIECE 99POSSIBLE MATCH
HEAD,COOLER
Possible match (shared part number)Tate Andale, Llc
4420-01-196-5370N5501 PIECE 100POSSIBLE MATCH
HEAD,COOLER
Possible match (shared part number)Tate Andale, Llc
4420-01-196-5371N5501 PIECE 101POSSIBLE MATCH
GLAND,COOLER
Possible match (shared part number)Tate Andale, Llc
4820-01-196-5372N5501 PIECE 111POSSIBLE MATCH
LIFTING SCREW,PLUG,VALVE
Possible match (shared part number)Tate Andale, Llc
4420-01-196-5373N5501 PIECE 98POSSIBLE MATCH
HEAD,MAIN
Possible match (shared part number)Tate Andale, Llc
4730-01-196-7478N5501 PIECE 153POSSIBLE MATCH
ADAPTER,STRAIGHT,PIPE TO TUBE
Possible match (shared part number)Tate Andale, Llc
4420-01-196-7636N5501RHPOSSIBLE MATCH
COOLER,FLUID,INDUSTRIAL
Possible match (shared part number)Tate Andale, Llc
NSN 4820-01-191-8944 is a Disk,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-191-8944?
NSN 4820-01-191-8944 has 1 manufacturer part number on file: N5501 PIECE 102 (Tate Andale, Llc).
What NSN replaces 4820-01-191-8944?
11 possible matches (shared part number, not a government interchangeability claim): 4820-01-192-6018, 4730-01-194-0130, 4820-01-196-5170. Verify interchangeability with system specifications before substitution.
What are the specifications of N5501 PIECE 102?
Key specifications for N5501 PIECE 102: Overall Height: 10.188 INCHES NOMINAL IN; Taper Major Diameter: 2.527 INCHES NOMINAL IN; Seat Angle: 12.0 DEGREES NOMINAL; Taper Length: 4.625 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-191-8944 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.