The bellow control valve is a pneumatically operated process valve with a
single-acting diaphragm actuator. A PTFE bellow ensures the separation between
medium and actuator. The materials used and the design of the media
space allow the use under hygienic or aggressive conditions. It has a good
cleanability. The combination with a controller (Type 869x) and the control
cone integrated into the bellow enable the valve to handle demanding control
tasks. The space-saving actuator with low internal volume not only results in
a very compact size but also in remarkably low response times. The valve is
characterized by a good control performance due to the low-friction design
and has a linear characteristic. A certain variety of body and block system
solutions are deliverable.
Type description