You can make one if you have a hydraulic jobber near you. Place an open-center electric over hydraulic double-acting spool valve between the power beyond port on your loader valve and the three-point/tank port and run the A and B line up to the front of your loader and wire in a self-centered two-way switch to trigger the pool valve. I made mine with as many hard lines as I could and it turned out nicer than what the factory offers.