NSN 4820-01-122-5254 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-122-5254. Manufacturer of record part number: N5740 PIECE 3.
The Seat,valve, cataloged under National Stock Number 4820-01-122-5254, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-122-5254
Primary Part Number
N5740 PIECE 3
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Tate Andale, Llc
Status
ACTIVE
Material
COPPER ALLOY OVERALL
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.
4330-01-141-6312N5740 PIECE 1POSSIBLE MATCH
FILTER BODY,FLUID
Possible match (shared part number)Tate Andale, Llc
5340-01-142-1599N5740 PIECE 13POSSIBLE MATCH
COVER,ACCESS
Possible match (shared part number)Tate Andale, Llc
4330-01-142-1665N5740 PIECE 9POSSIBLE MATCH
COVER ASSEMBLY
Possible match (shared part number)Tate Andale, Llc
4330-01-142-1666N5740 PIECE 10POSSIBLE MATCH
COVER ASSEMBLY
Possible match (shared part number)Tate Andale, Llc
4330-01-143-2907C4510 R1 PIECES 1B AND 1XPOSSIBLE MATCH
FILTER BODY,FLUID
Possible match (shared part number)Tate Andale, Llc
4330-01-143-2908N5740 PIECE 7POSSIBLE MATCH
COVER,BASKET,FILTER
Possible match (shared part number)Tate Andale, Llc
4330-01-143-2909N5740 PIECE 8POSSIBLE MATCH
COVER ASSEMBLY
Possible match (shared part number)Tate Andale, Llc
NSN 4820-01-122-5254 is a Seat,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-122-5254?
NSN 4820-01-122-5254 has 1 manufacturer part number on file: N5740 PIECE 3 (Tate Andale, Llc).
What NSN replaces 4820-01-122-5254?
7 possible matches (shared part number, not a government interchangeability claim): 4330-01-141-6312, 5340-01-142-1599, 4330-01-142-1665. Verify interchangeability with system specifications before substitution.
What are the specifications of N5740 PIECE 3?
Key specifications for N5740 PIECE 3: Material: COPPER ALLOY OVERALL; Seating Surface Shape: FLAT. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-122-5254 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.