Parker Sempress Pneumatic has introduced a compact binary counter valve
with integrated sequence operation that is suitable for the control of
slides, flaps, doors and locks on conveyor systems. It is available in
two versions: for pneumatic or electronic actuation. The 5/2 way main
valve has a flow capacity of 460 litre/min and operates at air pressures
from 4 to 10bar, enabling it to operate pneumatic actuators with bores of
80mm.
The binary counter valve is pulse operated, each signal alternately
energising and exhausting the outlet ports. Operation is based on an
integrated sequence, with no mechanical binary counter parts. The unit is
thus friction-free and good for up to ten million cycles.