NSN 4820-01-497-7641 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-497-7641. Manufacturer of record part number: AB44S225 ITEM 15.
Manufacturer of record: Parker-Hannifin Corporation Div Hydraulic Accumulator Division
Identification
NSN: 4820-01-497-7641
NIIN: 014977641
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: AB44S225 ITEM 15
Manufacturer: Parker-Hannifin Corporation Div Hydraulic Accumulator Division
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-497-7641, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Div Hydraulic Accumulator Division. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-497-7641
Primary Part Number
AB44S225 ITEM 15
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Parker-Hannifin Corporation Div Hydraulic Accumulator Division
Status
ACTIVE
Seating Surface Shape
FLAT
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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2090-01-497-7647703012POSSIBLE MATCH
BLADDER,ACCUMULATOR,HYDRAULIC
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
4820-01-497-7650AB44S225 ITEM 9POSSIBLE MATCH
COCK,POPPET DRAIN
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
4820-01-497-7658AB44S225 ITEM 30POSSIBLE MATCH
FUSE,HYDRAULIC SYSTEM
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
4820-01-497-7663AB44S225 ITEM 23POSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
4820-01-497-7667AB44S225 ITEM 28POSSIBLE MATCH
BODY,VALVE
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
4820-01-498-0276225BN30097POSSIBLE MATCH
FUSE,HYDRAULIC SYSTEM
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
2090-01-502-6972AB44B3T1S225POSSIBLE MATCH
ACCUMULATOR,HYDRAULIC
Possible match (shared part number)Parker-Hannifin Corporation Div Hydraulic Accumulator Division
Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA)
Reference documents
Reference
Meaning
AB44S225
D/9Drawing number reference only
Parker-Hannifin Corporation Div Hydraulic Accumulator Division
Related Parts
2090-01-497-7647POSSIBLE MATCH
BLADDER,ACCUMULATOR,HYDRAULIC
703012
4820-01-497-7650POSSIBLE MATCH
COCK,POPPET DRAIN
AB44S225 ITEM 9
4820-01-497-7658POSSIBLE MATCH
FUSE,HYDRAULIC SYSTEM
AB44S225 ITEM 30
4820-01-497-7663POSSIBLE MATCH
CAP,VALVE
AB44S225 ITEM 23
4820-01-497-7667POSSIBLE MATCH
BODY,VALVE
AB44S225 ITEM 28
4820-01-498-0276POSSIBLE MATCH
FUSE,HYDRAULIC SYSTEM
225BN30097
2090-01-502-6972POSSIBLE MATCH
ACCUMULATOR,HYDRAULIC
AB44B3T1S225
Frequently Asked Questions
What is NSN 4820-01-497-7641?
NSN 4820-01-497-7641 is a Seat,valve, manufactured by Parker-Hannifin Corporation Div Hydraulic Accumulator Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-497-7641?
NSN 4820-01-497-7641 has 2 manufacturer part numbers on file: 1334451010 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division), AB44S225 ITEM 15 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division).
What NSN replaces 4820-01-497-7641?
7 possible matches (shared part number, not a government interchangeability claim): 2090-01-497-7647, 4820-01-497-7650, 4820-01-497-7658. Verify interchangeability with system specifications before substitution.
What are the specifications of AB44S225 ITEM 15?
Key specifications for AB44S225 ITEM 15: End Item Identification: 11 GALLON 3.000 PSI BLADDER ACCUMULATOR; Seating Surface Shape: FLAT. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-497-7641 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.