PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

KOO50681Inlet Valve,compressor

Leroi International Inc Dba Compair Leroi · NSN 4310-01-084-0535 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-084-0535 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-084-0535. Primary manufacturer part number: KOO50681.
Features
  • Inlet Valve,compressor — FSC 4310
  • General Characteristics Item Description: CONSISTS OF 1 EA P/N 50680 VALVE LOCKNUT; 1 EA P/N 47977 VALVE SEAT LP; 1 EA P/N 47973 VALVE PLATE LP; 1 EA P/N 47993 VALVE SPRING LP; 1 EA P/N 48146 VALVE RETAINER LP INLET; 1 EA P/N 50679 FLATHEAD VALVE SCREW
  • 2 verified cross-references
  • Primary manufacturer: Leroi International Inc Dba Compair Leroi
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Inlet Valve,compressor, cataloged under National Stock Number 4310-01-084-0535, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Leroi International Inc Dba Compair Leroi. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-084-0535
Primary Part NumberKOO50681
Item NameInlet Valve,compressor
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerLeroi International Inc Dba Compair Leroi
StatusACTIVE
General Characteristics Item DescriptionCONSISTS OF 1 EA P/N 50680 VALVE LOCKNUT; 1 EA P/N 47977 VALVE SEAT LP; 1 EA P/N 47973 VALVE PLATE LP; 1 EA P/N 47993 VALVE SPRING LP; 1 EA P/N 48146 VALVE RETAINER LP INLET; 1 EA P/N 50679 FLATHEAD VALVE SCREW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4310-00-431-164912525 INTERCHANGEABLE
Plate,valve Stop
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
2810-00-448-682550681 INTERCHANGEABLE
Cork-Gen Drive Pini
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
3460-00-603-9205BD-1245-GP INTERCHANGEABLE
Wheel,abrasive
Wright Tool Company, Llc
3455-00-738-8080 INTERCHANGEABLE
File,rotary
4320-00-867-576150681 INTERCHANGEABLE
Parts Kit,liquid Dispensing Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
5330-00-943-6415S13497-103 INTERCHANGEABLE
Seal,nonmetallic Special Shaped
Kirkhill, Inc. Dba Kirkhill Inc
4310-01-305-327650681 INTERCHANGEABLE
Valve Assembly,compressor
Emglo Products Corp
Cross-Reference Index
Part NumberManufacturer
50681 Compair Kellogg Div of Robertshaw Controls Co (USA)
KOO50681 PRIMARY Leroi International Inc Dba Compair Leroi (USA)
Related Parts
4310-00-431-1649INTERCHANGEABLE
PLATE,VALVE STOP
12525
2810-00-448-6825INTERCHANGEABLE
CORK-GEN DRIVE PINI
50681
3460-00-603-9205INTERCHANGEABLE
WHEEL,ABRASIVE
BD-1245-GP
3455-00-738-8080INTERCHANGEABLE
FILE,ROTARY
4320-00-867-5761INTERCHANGEABLE
PARTS KIT,LIQUID DISPENSING PUMP
50681
5330-00-943-6415INTERCHANGEABLE
SEAL,NONMETALLIC SPECIAL SHAPED
S13497-103
4310-01-305-3276INTERCHANGEABLE
VALVE ASSEMBLY,COMPRESSOR
50681

Frequently Asked Questions

What is NSN 4310-01-084-0535?

NSN 4310-01-084-0535 is a Inlet Valve,compressor, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-084-0535?

NSN 4310-01-084-0535 has 2 cross-referenced part numbers: 50681 (Compair Kellogg Div of Robertshaw Controls Co), KOO50681 (Leroi International Inc Dba Compair Leroi).

What NSN replaces 4310-01-084-0535?

There are 7 known substitutes for 4310-01-084-0535: 4310-00-431-1649, 2810-00-448-6825, 3460-00-603-9205 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of KOO50681?

Key specifications for KOO50681: General Characteristics Item Description: CONSISTS OF 1 EA P/N 50680 VALVE LOCKNUT; 1 EA P/N 47977 VALVE SEAT LP; 1 EA P/N 47973 VALVE PLATE LP; 1 EA P/N 47993 VALVE SPRING LP; 1 EA P/N 48146 VALVE RETAINER LP INLET; 1 EA P/N 50679 FLATHEAD VALVE SCREW. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com