Answering the need for added hydraulic versatility, this guide profiles top third-function valve kits that retrofit loaders to run multiple tools at once. These kits are best for farmers, hobby farmers, and compact-tractor owners who want to curl a bucket while operating a grapple, auger, or snow equipment simultaneously. The models below emphasize compatibility, durability, and easy installation. Use this concise comparison to pick a kit that matches your loader setup and power requirements.
| Product | Brand | Key Benefit |
|---|---|---|
| Summit Hydraulics Third Function Valve Kit for Kubota L Series | Summit Hydraulics | Wide Kubota compatibility with LA loaders, power beyond integration |
| Third Function Valve Kit Compatible with Kubota L2501/L3301/L3901 | sixcow | Durable aluminum build, 5080 PSI rating, versatile attachments |
| Hydraulic Third Function Valve Kit with Joystick | Summit Hydraulics | Joystick control, 13GPM flow |
| TFK2 Third Function Valve Kit | Yoursme | Cost-effective, ergonomic joystick, broad compatibility |
| Summit Universal Hydraulic Third Function Kit with Joystick | Summit Hydraulics | Electronic control, 15 GPM, 3/8″ ISO fittings |
Summit Hydraulics Third Function Valve Kit Compatible with Kubota L2501, L2502, L3200, L3301, L3302, L3901 & L3902 Tractors
Best for Kubota models with LA 525 or LA 524 loaders, this kit uses the loader’s power beyond port to enable multiple functions. It includes a joystick handle that replaces the existing one and adds two integrated momentary push buttons to operate cylinder actions with a press. This option is ideal for users who want seamless, one-handed control while keeping a compact control footprint.
Third Function Valve Kit Compatible with Kubota L2501 L3301 L3901 Tractors with LA525 Loader, L3200 L3800 with LA524 Loader
Best for a broad range of Kubota models, this kit emphasizes compatibility across several loader configurations. It uses a 12V solenoid valve and aluminum housing built for rugged use and supports up to roughly 5080 PSI with a 15 GPM flow. Choose this if you need wide applicability with solid construction for medium-duty tasks.
Caution: Ensure your loader’s power beyond port is accessible and that compatible loaders are listed for your exact tractor model.
Hydraulic Third Function Valve Kit w/Joystick Handle for Tractor/Loader, 1/2″ AG Couplers
Best for users who want a compact, joystick-operated kit with a strong 13 GPM capacity. Its cast iron monoblock design includes a built-in relief valve for safety. The handle’s ergonomic design makes it suitable for frequent, on-the-fly function changes, though installation may require compatible gauge fittings for some loaders.
TFK2 Third Function Valve Kit Fit for Kubota L2501 L3301 L3901 L3200 L3800 Tractors with LA525 LA524 Loaders
Best for value-conscious buyers needing broad Kubota compatibility. It provides an ergonomic joystick with integrated momentary switches for quick cylinder control. The kit supports up to 15 GPM and 5080 PSI, making it suitable for common loader tasks, but note: some cab configurations may affect fit on certain models.
Summit Hydraulics Universal Hydraulic Third Function Valve Kit with Joystick
This universal kit adds an electronically controlled hydraulic function without factory additions. It includes standard 1/2″ agricultural couplers, and the joystick control provides straightforward two-button operation. Best for users seeking a flexible addition that works across multiple tractor brands and loader setups, with easy-to-follow connections.
Summit Hydraulics Third Function Valve Kit for Kubota BX23S, BX1880, BX2380, BX2680
Best for BX-series compact tractors seeking rugged aluminum housing and a high-pressure rating. It specifies a 5080 PSI maximum operating pressure with a 15 GPM flow, suitable for tighter spaces where compact hydraulics are essential. Limitations may include loader compatibility with specific BX loader configurations.
Buying Guide
What should you consider before buying?
Compatibility matters most. Confirm your tractor model, loader model, and whether the loader uses a power beyond port to power a third function kit. Look for kits that specify the correct loader compatibility and hydraulic flow (GPM) to match your loader’s capacity.
What control style fits your needs?
Joysticks offer precise, single-handed control and are ideal for frequent function changes. If you prefer minimal changes to your current setup, a kit with a joystick and integrated buttons helps operate multiple cylinders without reaching for separate valves.
Durability and safety considerations
Choose kits with solid aluminum or cast iron housings and built-in relief valves to prevent over-pressurization. Check maximum operating pressure ratings and flow to ensure reliability under demanding tasks.
Installation complexity
Some kits are plug-and-play with existing loader valves, while others may require additional fittings or tubing. If you’re not confident performing hydraulic work, seek kits with clearer installation guidance or professional assistance.
Price vs. value
While higher-priced kits often offer broader compatibility and better materials, evaluate whether your intended tasks (grapple, auger, snow equipment) justify the investment. A mid-range kit that matches your loader’s specs can provide ample functionality without overpaying.
FAQ
- What is a third-function valve kit? It adds a second hydraulic circuit to a loader for operating attachments like grapples or augers, allowing more than one function at a time.
- Do these kits require special power sources? Most kits are powered by the loader’s power beyond port and use a 12V solenoid valve, but check your loader’s specifications.
- Will these work on Kubota and non-Kubota tractors? Some kits advertise broad compatibility; verify exact model and loader compatibility for your tractor.
- Is a joystick always included? Many kits include a joystick handle or offer it as an option. Confirm what’s included before purchase.
- Do I need professional installation? If you’re comfortable with hydraulic fittings and threading, you may install it yourself; otherwise, seek a professional.
- What attachments benefit most from a third-function kit? Grapples, augers, snowplows, and tilt attachments typically benefit most from simultaneous operation.
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