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NSN 4820-01-631-8341Government record, cited

Valve, Rotary, Selector4820-01-631-8341

NSN 4820-01-631-8341 · NIIN 016318341 · Part number 81FS-END-NBM400-EN
Fetterolf Corporation · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 53631
Government record, cited
NSN 4820-01-631-8341 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-631-8341. Manufacturer of record part number: 81FS-END-NBM400-EN.
Also searched as  4820-01-631-8341 · 4820016318341 · NIIN 016318341 · 01-631-8341 · FSC 4820 Valves, Nonpowered · CAGE 53631 · 81FS-END-NBM400-EN
Nearby stock numbers  ·
Features
  • Valve,rotary,selector — FSC 4820
  • Flange Face Design: PLAIN
  • Connection Type: FLANGE, ROUND W/HOLES
  • Valve Size: 2.000 INCHES IN
  • Flow Type: TWO-WAY
  • Body Material: STEEL
  • Mounting Facility: INLINE
  • Bolt Hole Quantity: 2
Identification
  • NSN: 4820-01-631-8341
  • NIIN: 016318341
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: 81FS-END-NBM400-EN
  • Manufacturer: Fetterolf Corporation
General Description

The Valve,rotary,selector, cataloged under National Stock Number 4820-01-631-8341, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fetterolf Corporation. Government technical data includes 10 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
ParameterValue
NSN4820-01-631-8341
Primary Part Number81FS-END-NBM400-EN
Item NameValve,rotary,selector
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerFetterolf Corporation
StatusACTIVE
Flange Face DesignPLAIN
Connection TypeFLANGE, ROUND W/HOLES
Valve Size2.000 INCHES IN
Flow TypeTWO-WAY
Body MaterialSTEEL
Mounting FacilityINLINE
Bolt Hole Quantity2
Flange Diameter6.540 INCHES IN
Connection LocationSIDE
Connection Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
81FS-END-NBM400-EN PRIMARY Fetterolf Corporation (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 4820-01-631-8341?

NSN 4820-01-631-8341 is a Valve,rotary,selector, manufactured by Fetterolf Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-631-8341?

NSN 4820-01-631-8341 has 1 manufacturer part number on file: 81FS-END-NBM400-EN (Fetterolf Corporation).

What are the specifications of 81FS-END-NBM400-EN?

Key specifications for 81FS-END-NBM400-EN: Flange Face Design: PLAIN; Connection Type: FLANGE, ROUND W/HOLES; Valve Size: 2.000 INCHES IN; Flow Type: TWO-WAY. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-631-8341 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.
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