PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1143Stem,valve,governor

Niantic Tool, Inc. Dba Niantic Tool Co · NSN 4820-01-163-7552 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-163-7552 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-163-7552. Primary manufacturer part number: A1143.
Features
  • Stem,valve,governor — FSC 4820
  • 10 verified cross-references
  • Primary manufacturer: Niantic Tool, Inc. Dba Niantic Tool Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,valve,governor, cataloged under National Stock Number 4820-01-163-7552, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Niantic Tool, Inc. Dba Niantic Tool Co. This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameStem,valve,governor
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersDresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (CAGE 82328); Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (CAGE 0BR59); Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (CAGE 8FGX3); Niantic Tool, Inc. Dba Niantic Tool Co (CAGE 0B5H6); Turbodyne Div of Dresser Industries Inc See Code 0br59 (CAGE 93235)
Technical Specifications
ParameterValue
NSN4820-01-163-7552
Primary Part NumberA1143
Item NameStem,valve,governor
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNiantic Tool, Inc. Dba Niantic Tool Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-086-834090017-2 INTERCHANGEABLE
Crimping Tool
Te Connectivity Corporation
8455-00-246-3526 INTERCHANGEABLE
Insignia,shoulder Sleeve
5330-00-247-7550A1143 INTERCHANGEABLE
Gasket
Derbyshire Machine & Tool Co
5940-00-256-6387A1143 INTERCHANGEABLE
Terminal Board
Illinois Tool Works Inc Dba Simco
6625-00-456-2747151-07-012 INTERCHANGEABLE
Lead,test
Hickok Waekon Llc
4130-00-593-6718C-082 INTERCHANGEABLE
Filter-Drier,refrigerant
Parker-Hannifin Corp Div Sporlan Division
5910-00-781-0735 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5130-00-973-0063105804 INTERCHANGEABLE
Spindle Adapter
Huck International, Inc. Div Kingston Operations
5120-00-986-804090017-3 INTERCHANGEABLE
Crimping Tool,terminal,hand
Te Connectivity Corporation
5915-01-010-6181LA-20N INTERCHANGEABLE
Filter,low Pass
Microlab/fxr Llc
Cross-Reference Index
Part NumberManufacturer
B-3807 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
B-3807 Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA)
831231 Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA)
831231 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
A1143 PRIMARY Niantic Tool, Inc. Dba Niantic Tool Co (USA)
831231 Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA)
B-3807 Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA)
831231 Turbodyne Div of Dresser Industries Inc See Code 0br59 (USA)
700239 PRIMARY Niantic Tool, Inc. Dba Niantic Tool Co (USA)
900173 Lee Evans, Inc. (USA)
Related Parts
5120-00-086-8340INTERCHANGEABLE
CRIMPING TOOL
90017-2
8455-00-246-3526INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
5330-00-247-7550INTERCHANGEABLE
GASKET
A1143
5940-00-256-6387INTERCHANGEABLE
TERMINAL BOARD
A1143
6625-00-456-2747INTERCHANGEABLE
LEAD,TEST
151-07-012
4130-00-593-6718INTERCHANGEABLE
FILTER-DRIER,REFRIGERANT
C-082
5910-00-781-0735INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5130-00-973-0063INTERCHANGEABLE
SPINDLE ADAPTER
105804
5120-00-986-8040INTERCHANGEABLE
CRIMPING TOOL,TERMINAL,HAND
90017-3
5915-01-010-6181INTERCHANGEABLE
FILTER,LOW PASS
LA-20N
2920-01-283-5984INTERCHANGEABLE
LEAD SET,IGNITION,ENGINE
700239
3040-01-297-4550INTERCHANGEABLE
SHAFT,SHOULDERED
700-239

Frequently Asked Questions

What is NSN 4820-01-163-7552?

NSN 4820-01-163-7552 is a Stem,valve,governor, manufactured by Niantic Tool, Inc. Dba Niantic Tool Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-163-7552?

NSN 4820-01-163-7552 has 10 cross-referenced part numbers: B-3807 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), B-3807 (Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand), 831231 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 831231 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), A1143 (Niantic Tool, Inc. Dba Niantic Tool Co) and 5 more.

What NSN replaces 4820-01-163-7552?

There are 12 known substitutes for 4820-01-163-7552: 5120-00-086-8340, 8455-00-246-3526, 5330-00-247-7550 and 9 more. Verify interchangeability with system specifications before substitution.

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