NSN 4820-01-226-7581 · NIIN 012267581 · Part number 34455-002-6275
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04537
Government record, cited
NSN 4820-01-226-7581 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-226-7581. Manufacturer of record part number: 34455-002-6275.
Nearby stock numbers← 4820-01-226-7578 Valve, Flow Control
·
4820-01-226-7672 →
4820-01-226-7581 — Valves, Nonpowered
Features
Rod Piston — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Identification
NSN: 4820-01-226-7581
NIIN: 012267581
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 34455-002-6275
Manufacturer: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
General Description
The Rod Piston, cataloged under National Stock Number 4820-01-226-7581, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa. 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
4820-01-226-7581
Primary Part Number
34455-002-6275
Item Name
Rod Piston
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA)
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 4820-01-226-7581?
NSN 4820-01-226-7581 is a Rod Piston, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-226-7581?
NSN 4820-01-226-7581 has 2 manufacturer part numbers on file: 34455-002-6275 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 21998B (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa).
What are the specifications of 34455-002-6275?
Key specifications for 34455-002-6275: End Item Identification: VALVE TRIP THROTTLE. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-226-7581 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.