Angle seat valves are externally controlled valves. They are directly actuated using compressed air supply. In this process, the seat of the process valve is raised by a pneumatic actuator. In the normal position, the valve is closed by a spring. When the actuator is supplied with operating pressure, it raises the control piston as well as the valve disc – the valve opens. The valve seat is slanted at an angle of approx. 50° in relation to the media flow. The flow direction is determined by the design of the valve. Angle seat valves are used in applications in which absolute purity of the medium cannot be ensured, in which high-viscosity media are to be controlled or in vapour applications.
Strengths
Angle seat valves are simple and sturdy and are thus perfectly suitable for almost all media with a viscosity
No differential pressure required between the input and output
Low flow resistance
Insensitive to vapour or slightly contaminated media
Long service life
Low maintenance
The valves have a high chemical and thermal resistance thanks to their design