PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14438Stem,fluid Valve

Mine Safety Appliances Company · NSN 4820-00-495-9134 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-495-9134 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-495-9134. Primary manufacturer part number: 14438.
Features
  • Stem,fluid Valve — FSC 4820
  • Largest Outside Diameter: 0.438 INCHES NOMINAL IN
  • Stem Actuating End Type: SLOTTED
  • Material: STEEL
  • 1 verified cross-reference
  • Primary manufacturer: Mine Safety Appliances Company
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-00-495-9134, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mine Safety Appliances Company. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-495-9134
Primary Part Number14438
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMine Safety Appliances Company
StatusACTIVE
Largest Outside Diameter0.438 INCHES NOMINAL IN
Stem Actuating End TypeSLOTTED
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5365-00-182-486214-438 INTERCHANGEABLE
Spacer,sleeve
Hamilton Sundstrand Corporation
5950-00-490-865714438 INTERCHANGEABLE
Reactor
Torotel, Inc. Div Torotel Products, Inc.
5331-00-599-281814438 INTERCHANGEABLE
O-Ring
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5220-01-360-89271443-8 INTERCHANGEABLE
Gage,plug,thread
Stanley Engineered Fastening Llc
5305-01-564-5812144-38 INTERCHANGEABLE
Screw,cap,hexagon Head
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
14438 PRIMARY Mine Safety Appliances Company (USA)
Related Parts
5365-00-182-4862INTERCHANGEABLE
SPACER,SLEEVE
14-438
5950-00-490-8657INTERCHANGEABLE
REACTOR
14438
5331-00-599-2818INTERCHANGEABLE
O-RING
14438
5220-01-360-8927INTERCHANGEABLE
GAGE,PLUG,THREAD
1443-8
5305-01-564-5812INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
144-38

Frequently Asked Questions

What is NSN 4820-00-495-9134?

NSN 4820-00-495-9134 is a Stem,fluid Valve, manufactured by Mine Safety Appliances Company, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-495-9134?

NSN 4820-00-495-9134 has 1 cross-referenced part number: 14438 (Mine Safety Appliances Company).

What NSN replaces 4820-00-495-9134?

There are 5 known substitutes for 4820-00-495-9134: 5365-00-182-4862, 5950-00-490-8657, 5331-00-599-2818 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14438?

Key specifications for 14438: Largest Outside Diameter: 0.438 INCHES NOMINAL IN; Overall Length: 1.812 INCHES NOMINAL IN; Stem Actuating End Type: SLOTTED; Material: STEEL. 4 total characteristics are documented in the Federal Logistics Information System.

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