NSN 4820-01-426-0277 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-426-0277. Manufacturer of record part number: 322B0809000F21501.
Also searched as4820-01-426-0277 ·
4820014260277 ·
NIIN 014260277 ·
01-426-0277 ·
FSC 4820 Valves, Nonpowered · CAGE 61748 · 322B0809000F21501
Material Document and Classification: A564 630 HT405 SS ASSN STD SINGLE MATERIAL RESPONSE SEAT
Material: STEEL CORROSION RESISTING SEAT
1 manufacturer part number on file
Manufacturer of record: Clyde Union Inc Dba Clydeunion Pumps
Identification
NSN: 4820-01-426-0277
NIIN: 014260277
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 322B0809000F21501
Manufacturer: Clyde Union Inc Dba Clydeunion Pumps
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-426-0277, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Clyde Union Inc Dba Clydeunion Pumps. 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-426-0277
Primary Part Number
322B0809000F21501
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Clyde Union Inc Dba Clydeunion Pumps
Status
ACTIVE
Material Document and Classification
A564 630 HT405 SS ASSN STD SINGLE MATERIAL RESPONSE SEAT
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 4820-01-426-0277?
NSN 4820-01-426-0277 is a Seat,valve, manufactured by Clyde Union Inc Dba Clydeunion Pumps, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-426-0277?
NSN 4820-01-426-0277 has 1 manufacturer part number on file: 322B0809000F21501 (Clyde Union Inc Dba Clydeunion Pumps).
What are the specifications of 322B0809000F21501?
Key specifications for 322B0809000F21501: Material Document and Classification: A564 630 HT405 SS ASSN STD SINGLE MATERIAL RESPONSE SEAT; Special Features: SIX EA REQUIRED; FOR A TRIPLEX POWER PUMP, TX-10, UNION PUMP CO.; End Item Identification: NAVY WEAPONS SYSTEM TH, STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: STEEL CORROSION RESISTING SEAT. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-426-0277 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.