Free flo, heavy duty, livestock plastic watering valve, no float, rod or guard needed, approved non-siphoning, fits all tanks or troughs, automatically maintains water level, protected from surface freezing, completely corrosion-proof, 16" water level adjusting knob, easily installed in new or existing system, hook-up 1/4" copper pipe, 1/2" metal pipe, garden hose or 1" pvc adapter fitting, full 1-year guarantee.
