NSN 4820-01-437-8921 · NIIN 014378921 · Part number 73N-B
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 41387
Government record, cited
NSN 4820-01-437-8921 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-437-8921. Manufacturer of record part number: 73N-B.
Also searched as4820-01-437-8921 ·
4820014378921 ·
NIIN 014378921 ·
01-437-8921 ·
FSC 4820 Valves, Nonpowered · CAGE 41387 · 73N-B
Nearby stock numbers← 4820-01-437-8916 Valve, Flow Control
·
4820-01-437-8922 →
4820-01-437-8921 — Valves, Nonpowered
Features
Positioner,valve — FSC 4820
Overall Diameter: 3.375 INCHES NOMINAL IN
General Characteristics Item Description: BOTTOM LOADING; DIRECT ACTING
1 manufacturer part number on file
Manufacturer of record: Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
Identification
NSN: 4820-01-437-8921
NIIN: 014378921
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 73N-B
Manufacturer: Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
General Description
The Positioner,valve, cataloged under National Stock Number 4820-01-437-8921, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives. 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
4820-01-437-8921
Primary Part Number
73N-B
Item Name
Positioner,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives (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 4820-01-437-8921?
NSN 4820-01-437-8921 is a Positioner,valve, manufactured by Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-437-8921?
NSN 4820-01-437-8921 has 1 manufacturer part number on file: 73N-B (Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives).
What are the specifications of 73N-B?
Key specifications for 73N-B: Overall Diameter: 3.375 INCHES NOMINAL IN; General Characteristics Item Description: BOTTOM LOADING; DIRECT ACTING; Overall Length: 4.625 INCHES NOMINAL IN; End Item Identification: TARAWA CLASS LHA. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-437-8921 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.