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