PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14 1-2Valve,check

Thomas Industries Inc Pneumotive Div · NSN 4820-00-268-8777 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-268-8777 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-268-8777. Primary manufacturer part number: 14 1-2.
Features
  • Valve,check — FSC 4820
  • 9 verified cross-references
  • Primary manufacturer: Thomas Industries Inc Pneumotive Div
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-00-268-8777, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Thomas Industries Inc Pneumotive Div. This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameValve,check
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersManufacturers Standardization Society of the Valve and Fittings Industry Inc (CAGE 59646); Thomas Industries Inc Pneumotive Div (CAGE 0UPS6); Fl Industries Inc Pneumotive Div (CAGE 51034); Jenkins Bros (CAGE 75144); The Walworth Company (CAGE 63686)
Technical Specifications
ParameterValue
NSN4820-00-268-8777
Primary Part Number14 1-2
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerThomas Industries Inc Pneumotive Div
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
6620-00-526-8722DE52196 INTERCHANGEABLE
Gage,pressure,dial Indicating
Agco Corp Parts Opn
4130-00-879-0732 INTERCHANGEABLE
Manifold,charging and Testing,re
5835-01-077-6278 INTERCHANGEABLE
Recorder,sound
Cross-Reference Index
Part NumberManufacturer
MSS-SP-80 Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA)
14 1-2 PRIMARY Thomas Industries Inc Pneumotive Div (USA)
14 1-2 Fl Industries Inc Pneumotive Div (USA)
352C Jenkins Bros (USA)
3412 1/2IN The Walworth Company (USA)
WWV51 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
FIG 352 SIZE 1/2 IN Jenkins Bros (USA)
352 Jenkins Bros (USA)
T433W1-2IN Nibco Inc (USA)
Related Parts
6620-00-526-8722INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
DE52196
4130-00-879-0732INTERCHANGEABLE
MANIFOLD,CHARGING AND TESTING,RE
5835-01-077-6278INTERCHANGEABLE
RECORDER,SOUND

Frequently Asked Questions

What is NSN 4820-00-268-8777?

NSN 4820-00-268-8777 is a Valve,check, manufactured by Thomas Industries Inc Pneumotive Div, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-268-8777?

NSN 4820-00-268-8777 has 9 cross-referenced part numbers: MSS-SP-80 (Manufacturers Standardization Society of the Valve and Fittings Industry Inc), 14 1-2 (Thomas Industries Inc Pneumotive Div), 14 1-2 (Fl Industries Inc Pneumotive Div), 352C (Jenkins Bros), 3412 1/2IN (The Walworth Company) and 4 more.

What NSN replaces 4820-00-268-8777?

There are 3 known substitutes for 4820-00-268-8777: 6620-00-526-8722, 4130-00-879-0732, 5835-01-077-6278. Verify interchangeability with system specifications before substitution.

Is NSN 4820-00-268-8777 still in active supply?

NSN 4820-00-268-8777 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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