PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51740-B180Stem,fluid Valve

Norriseal Norris Values Div Dba Dover Co · NSN 4820-01-194-6926 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-194-6926 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-194-6926. Primary manufacturer part number: 51740-B180.
Features
  • Stem,fluid Valve — FSC 4820
  • Stem Actuating End Type: SQUARE
  • Material: NICKEL ALLOY
  • Valve Type for Which Designed: BUTTERFLY
  • Valve Size for Which Designed: 2.000 INCHES IN
  • 5 verified cross-references
  • Primary manufacturer: Norriseal Norris Values Div Dba Dover Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-194-6926, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Norriseal Norris Values Div Dba Dover Co. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-194-6926
Primary Part Number51740-B180
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNorriseal Norris Values Div Dba Dover Co
StatusCANCELLED
Stem Actuating End TypeSQUARE
MaterialNICKEL ALLOY
Valve Type for Which DesignedBUTTERFLY
Valve Size for Which Designed2.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
2520-00-701-1072214050 INTERCHANGEABLE
Plugwelch
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
4820-01-139-17611014751 INTERCHANGEABLE
Disk,valve
Norriseal Norris Values Div Dba Dover Co
4820-01-194-8186 INTERCHANGEABLE
Disk,valve
3110-01-263-2661910002 INTERCHANGEABLE
Ball,bearing
Tr Engineering, Inc Div Tr Engineering Incorporated
5977-01-353-3162 INTERCHANGEABLE
Holder,electrode
5325-01-442-4894 INTERCHANGEABLE
Ring,retaining
Cross-Reference Index
Part NumberManufacturer
51740-B180 Norriseal Norris Values Div Dba Dover Co (USA)
910-002 Norriseal Norris Values Div Dba Dover Co (USA)
740B180 Norriseal Norris Values Div Dba Dover Co (USA)
910-002 2IN PIECE 9 Norriseal Norris Values Div Dba Dover Co (USA)
740-181 Norriseal Norris Values Div Dba Dover Co (USA)
Related Parts
2520-00-701-1072INTERCHANGEABLE
PLUGWELCH
214050
4820-01-139-1761INTERCHANGEABLE
DISK,VALVE
1014751
4820-01-194-8186INTERCHANGEABLE
DISK,VALVE
3110-01-263-2661INTERCHANGEABLE
BALL,BEARING
910002
5977-01-353-3162INTERCHANGEABLE
HOLDER,ELECTRODE
5325-01-442-4894INTERCHANGEABLE
RING,RETAINING

Frequently Asked Questions

What is NSN 4820-01-194-6926?

NSN 4820-01-194-6926 is a Stem,fluid Valve, manufactured by Norriseal Norris Values Div Dba Dover Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-194-6926?

NSN 4820-01-194-6926 has 5 cross-referenced part numbers: 51740-B180 (Norriseal Norris Values Div Dba Dover Co), 910-002 (Norriseal Norris Values Div Dba Dover Co), 740B180 (Norriseal Norris Values Div Dba Dover Co), 910-002 2IN PIECE 9 (Norriseal Norris Values Div Dba Dover Co), 740-181 (Norriseal Norris Values Div Dba Dover Co).

What NSN replaces 4820-01-194-6926?

There are 6 known substitutes for 4820-01-194-6926: 2520-00-701-1072, 4820-01-139-1761, 4820-01-194-8186 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51740-B180?

Key specifications for 51740-B180: Stem Actuating End Type: SQUARE; Material: NICKEL ALLOY; Valve Type for Which Designed: BUTTERFLY; Valve Size for Which Designed: 2.000 INCHES IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-194-6926 still in active supply?

NSN 4820-01-194-6926 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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