Apex plastic long-tail float valves keep tanks and troughs topped up through an extended threaded inlet. The range has 20mm and 25mm inlet connections, with standard or shorter float levers. The short-arm versions provide an option where float-arm clearance is limited.
The long tail is the extended threaded inlet that passes through the tank wall. The arm is the lever connecting the valve to the float; the short-arm version needs less space inside the tank.
Allow room for the float and arm to move through their full opening and closing travel. Check the drawing for the selected tail and arm before fitting.
Float sold separately. The recommended float is a 150mm Apex ball float in black or orange.