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.
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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
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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
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Typical Applications
- Valve replacement
- Fluid-system maintenance
- Repair of compatible Caterpillar equipment assemblies requiring this check valve
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Cross References
- Primary Caterpillar part number: 439-4777
- CAT primary reference: verify by part number before ordering.
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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.
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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.
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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.
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Search Keywords
CAT 439-4777: 1 3/16" X 1 3/16" CHECK VALVE, Caterpillar 439-4777: 1 3/16" X 1 3/16" CHECK VALVE, genuine CAT part, OEM Caterpillar replacement part, heavy equipment component.
CAT replacement part for equipment service, maintenance, repair, parts inventory, fleet support, and industrial machinery applications.
