PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51500Valve Assembly

Dresser Industries Inc Masoneilan North American Opns · NSN 4820-00-445-4159 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-445-4159 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-445-4159. Primary manufacturer part number: 51500.
Features
  • Valve Assembly — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Dresser Industries Inc Masoneilan North American Opns
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve Assembly, cataloged under National Stock Number 4820-00-445-4159, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dresser Industries Inc Masoneilan North American Opns. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve Assembly
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersDresser Industries Inc Masoneilan North American Opns (CAGE 90723)
Technical Specifications
ParameterValue
NSN4820-00-445-4159
Primary Part Number51500
Item NameValve Assembly
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDresser Industries Inc Masoneilan North American Opns
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6145-00-166-383551500 INTERCHANGEABLE
Wire,electrical
Unison Industries Llc
5133-00-236-2047 INTERCHANGEABLE
Drill,masonry,hand
6630-00-394-774251500 INTERCHANGEABLE
Tester,aniline Poin
Precision Scientific Petroleum Instruments Co
3020-00-484-140951500-02 INTERCHANGEABLE
Gear,spur
Cae Inc
5331-01-340-8220 INTERCHANGEABLE
O-Ring
6520-01-376-461651500 INTERCHANGEABLE
Resin,restorative,dental
Water Pik Inc Dba Waterpik Technologies
5930-01-583-765751500 INTERCHANGEABLE
Switch,thermostatic
G.s. Blodgett, Llc Div Blodgett
Cross-Reference Index
Part NumberManufacturer
51500 Dresser Industries Inc Masoneilan North American Opns (USA)
Related Parts
6145-00-166-3835INTERCHANGEABLE
WIRE,ELECTRICAL
51500
5133-00-236-2047INTERCHANGEABLE
DRILL,MASONRY,HAND
6630-00-394-7742INTERCHANGEABLE
TESTER,ANILINE POIN
51500
3020-00-484-1409INTERCHANGEABLE
GEAR,SPUR
51500-02
5331-01-340-8220INTERCHANGEABLE
O-RING
6520-01-376-4616INTERCHANGEABLE
RESIN,RESTORATIVE,DENTAL
51500
5930-01-583-7657INTERCHANGEABLE
SWITCH,THERMOSTATIC
51500

Frequently Asked Questions

What is NSN 4820-00-445-4159?

NSN 4820-00-445-4159 is a Valve Assembly, manufactured by Dresser Industries Inc Masoneilan North American Opns, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-445-4159?

NSN 4820-00-445-4159 has 1 cross-referenced part number: 51500 (Dresser Industries Inc Masoneilan North American Opns).

What NSN replaces 4820-00-445-4159?

There are 7 known substitutes for 4820-00-445-4159: 6145-00-166-3835, 5133-00-236-2047, 6630-00-394-7742 and 4 more. Verify interchangeability with system specifications before substitution.

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