CAT 439-4777: 1 3/16" X 1 3/16" CHECK VALVE
CAT 439-4777 Check Valve is a Caterpillar valve component identified as a 1 3/16 inch by 1 3/16 inch check valve. It is used where the specified part number and connection sizing are required in compatible Cat systems.
Specifications
- Brand: Caterpillar / CAT
- Part number: 439-4777
- Part type: Check valve
- Connection size noted in listing: 1 3/16 in x 1 3/16 in
- Function: One-way flow control
- Fitment: Verify system and serial-number application
Key Features
- Check-valve design supports directional flow control
- Part-number-specific replacement for compatible Caterpillar assemblies
- Useful for hydraulic, fluid, or pneumatic service contexts where specified
- Helps restore system function when the original valve is worn or damaged
Typical Applications
- Valve replacement
- Fluid-system maintenance
- Repair of compatible Caterpillar equipment assemblies requiring this check valve
Cross References
- Primary Caterpillar part number: 439-4777
- CAT primary reference: verify by part number before ordering.
Machine Compatibility
- Verify port size, valve orientation, system pressure requirements, and machine serial number before installation.
- Do not rely on product title alone for final fitment confirmation.
Engine Platforms
- Application depends on the machine system or assembly; not a universal engine-platform part.
- Recommended verification: Cat SIS, parts book, or authorized Caterpillar dealer lookup.
Important Note
Please confirm condition, included components, packaging, and fitment before purchase. Calibration, installation hardware, documentation, and accessories are included only when specifically shown or stated.
Search Keywords
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CAT replacement part for equipment service, maintenance, repair, parts inventory, fleet support, and industrial machinery applications.
