3
3.
Mode of Operation
yoke
guide rod
guide rod
centering
ring
air
connection
cylinder
A pneumatic stroke limitation can be used for the valve
series DELTA SW4 / M4.
The valves SW4 / M4 with pneumatic stroke limitation must
be designed in the
version NC = normally closed.
The valve design NO = normally open is not suited for the
pneumatic stroke limitation.
The pneumatic stroke limitation allows a continuous adjustment
of a total valve stroke of 0 - 100 %.
Equipped with the pneumatic stroke limitation, the valve seat
can take three different positions:
open, throttled and closed.
The required opening cross section is adopted by an
adjusting screw.
A separate control is needed to operate the pneumatic
stroke limitation.
The inner parts of the cylinder are maintenance-free.
UK
Pneumatic Stroke Limitation
for DELTA SW4 / M4
Operating Manual Rev.0