Multi-way valve for greenhouse watering systems has piston moving between closed and open position to allow flow through watering pipe, spring plate being mounted on top of piston rod and acting as supplementary piston
The multi-way valve for greenhouse watering systems has a piston (6) which moves between a closed (12) and open (13) position to allow flow through the watering pipe (4). A spring plate (19) is mounted on the top of the piston rod (7) and acts as a supplementary piston.