Farmers and operators increasingly rely on third function valve kits to run additional hydraulics from their existing loader systems. The following 5 kits are compatible with popular models from Kubota, John Deere, and other brands, and they integrate via the loader’s power beyond port to enable simultaneous functions. This guide highlights what each kit offers, how it’s powered, and practical considerations for choosing the right setup for your tractor or skid loader.
| Product | Brand | Compatibility (selected) |
|---|---|---|
| Summit Hydraulics Third Function Valve Kit Compatible with Kubota L Series | Summit Hydraulics | Kubota L2501, L3200, L3301, L3901 with LA loaders |
| AKWH Hydraulics Third Function Valve Kit Replacement for Kubota MX Series | AKWH | Kubota MX4700, MX4800, MX5000, MX5100, MX5200, MX5800 |
| Summit Hydraulics Third Function Kit for John Deere 3025E/3032E/3038E | Summit Hydraulics | John Deere 3025E, 3032E, 3038E |
| Summit Hydraulics Third Function Valve Kit for Kubota BX Series | Summit Hydraulics | Kubota BX23S, BX1880, BX2380, BX2680 |
| Summit Hydraulics Universal Third Function Valve Kit with Joystick | Summit Hydraulics | Various tractors/skid loaders with power beyond compatibility |
Note: Each kit is designed to be powered by the power beyond port of the existing loader valve, allowing multiple functions simultaneously—such as curling a bucket while closing a grapple. Always confirm compatibility with your exact loader model and hydraulic flow ratings before purchasing.
Summit Hydraulics Third Function Valve Kit for Kubota L Series
The kit is compatible with Kubota models including L2501, L3301, and L3901 equipped with compatible LA loaders, as well as the L3200 and L3800 with LA 524/LA 525 loaders. It uses the loader’s power beyond port to add a second hydraulic function, enabling simultaneous operations such as curling a bucket while closing a grapple. It also includes a joystick handle that replaces the stock and integrates two momentary push buttons for quick one-touch control of the additional function.
AKWH Hydraulics Third Function Valve Kit for Kubota MX Series
This replacement third function valve is designed for Kubota MX4700, MX4800, MX5000, MX5100, MX5200, MX5800 tractors with corresponding LA loaders. It adds an extra hydraulic function without interfering with main loader operations, powered via the power beyond port to enable multiple concurrent actions. Specifications list a maximum operating pressure of up to 5080 PSI with a 15 GPM flow rating, and SAE O-rings for high-pressure sealing.
Summit Hydraulics Third Function Kit for John Deere 3025E/3032E/3038E
Designed for John Deere compact tractors, this kit adds an electronically controlled hydraulic function via a weatherproof joystick with two integrated momentary switches. Compatible models include the 3025E, 3032E, and 3038E. Like other third function kits, it operates through the loader’s power beyond port, enabling simultaneous auxiliary functions such as grapples or other attachments. Maximum operating pressure and flow ratings match common loader systems, ensuring reliable performance in field use.
Summit Hydraulics Third Function Valve Kit for Kubota BX Series
Built for BX23S, BX1880, BX2380, and BX2680 tractors, this third function valve kit uses a solid aluminum housing for rugged field use. It supports a maximum operating pressure of 5080 PSI with a 15 GPM flow rating and is designed to withstand the demands of loader work. The kit’s compact construction helps preserve ground clearance while expanding hydraulic control options for accessory attachments.
Hydraulic Third Function Valve Kit with Joystick Handle
This Summit Hydraulics kit features a cast iron monoblock design with a built-in relief valve and a joystick handle to control a third function. The kit is capable of handling up to 13 GPM, with a reliable one-year guarantee. It’s suitable for users who want a sturdy, straightforward solution that easily integrates with existing loader setups through power beyond control, providing a practical balance of durability and performance.
Summit Hydraulics Kubota B2320/B2620/B2301/B2601 Third Function Kit
This kit is designed for Kubota B2320, B2620, B2301, and B2601 tractors with compatible loaders. It includes a joystick handle and two integrated momentary push buttons for straightforward, one-hand operation of an additional hydraulic function. The kit uses the loader’s power beyond port to enable multi-function work, making it a practical option for users needing enhanced loader capability without major modifications.
Buying Guide: Key Purchase Considerations
- Compatibility: Verify the exact tractor model, loader model, and loader valve type. Some kits specify compatibility with LA loaders or certain Kubota and John Deere ranges, while others are more universal. Incorrect fitment can affect performance and safety.
- Power Beyond and Flow: Most third function kits rely on the power beyond port. Check maximum flow (GPM) and operating pressure (PSI) requirements to ensure your loader hydraulics can supply adequate power without overloading the system.
- Controls and Ergonomics: Joystick handles with integrated momentary switches offer quick control but require careful placement and comfortable reach. Consider whether you prefer push-button toggles or integrated levers for your workflow.
- Durability and Materials: Aluminum housings are lighter, while solid aluminum or cast iron monoblock designs may offer higher durability in rugged work environments. Choose based on job intensity and exposure to debris or weather.
- Installation and Maintenance: Some kits are straightforward bolt-on upgrades; others may require professional installation. Review included hardware, seals, and recommended maintenance intervals to minimize downtime.
- Safety Certifications and Seals: Look for kits with robust seals (e.g., SAE O-rings) and pressure ratings that match your system. Proper sealing helps prevent leaks and ensures reliable operation under load.
- Attachments and Future Upgrades: If you plan to add grapples, augers, or snow-moving attachments, ensure the kit supports multiple functions and can be expanded with additional ports or controllers as needed.