PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26639Valve Assembly,non Return

Davey Compressor Co Div of Keco Industries Inc · NSN 4310-00-731-6655 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-731-6655 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-731-6655. Primary manufacturer part number: 26639.
Features
  • Valve Assembly,non Return — FSC 4310
  • General Characteristics Item Description: STEEL;CONSISTS OF 1 ASSEMBLY P/N PM26641,1 SEAT P/N AM25715,1 RING RETAINER P/N AP26642
  • 2 verified cross-references
  • Primary manufacturer: Davey Compressor Co Div of Keco Industries Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve Assembly,non Return, cataloged under National Stock Number 4310-00-731-6655, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Davey Compressor Co Div of Keco Industries Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-731-6655
Primary Part Number26639
Item NameValve Assembly,non Return
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerDavey Compressor Co Div of Keco Industries Inc
StatusACTIVE
General Characteristics Item DescriptionSTEEL;CONSISTS OF 1 ASSEMBLY P/N PM26641,1 SEAT P/N AM25715,1 RING RETAINER P/N AP26642
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-183-6715MS17131-5 INTERCHANGEABLE
Bearing,roller,needle
American Society for Testing and Materials Dba Astm International
5120-00-330-5583 INTERCHANGEABLE
Stud,puller Attachment
Cross-Reference Index
Part NumberManufacturer
26639 Davey Compressor Co Div of Keco Industries Inc (USA)
26639 Drs Environmental Systems Inc (USA)
Related Parts
3110-00-183-6715INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
MS17131-5
5120-00-330-5583INTERCHANGEABLE
STUD,PULLER ATTACHMENT

Frequently Asked Questions

What is NSN 4310-00-731-6655?

NSN 4310-00-731-6655 is a Valve Assembly,non Return, manufactured by Davey Compressor Co Div of Keco Industries Inc, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-731-6655?

NSN 4310-00-731-6655 has 2 cross-referenced part numbers: 26639 (Davey Compressor Co Div of Keco Industries Inc), 26639 (Drs Environmental Systems Inc).

What NSN replaces 4310-00-731-6655?

There are 2 known substitutes for 4310-00-731-6655: 3110-00-183-6715, 5120-00-330-5583. Verify interchangeability with system specifications before substitution.

What are the specifications of 26639?

Key specifications for 26639: General Characteristics Item Description: STEEL;CONSISTS OF 1 ASSEMBLY P/N PM26641,1 SEAT P/N AM25715,1 RING RETAINER P/N AP26642; End Item Identification: GRUMMAN AIRCRAFT CORP,A-10 AIRCRAFT. 2 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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