A quarter-turn valve which uses a hollow, perforated and pivoting ball to control flow through it.
A quarter-turn valve with a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid.
Non-return valve, allows the fluid to pass in one direction only.
Controls flow by a movement of a diaphragm. Upstream pressure, downstream pressure, or an external source can be used to change the position of the diaphragm.
A type of valve used for regulating flow in a pipeline, consisting of a movable disk-type element and a stationary ring seat in a spherical body.
Use air pressure as the power source. A pneumatic actuator may be arranged to be spring-closed or spring-opened, with air pressure overcoming the spring to provide movement. A “double acting” actuator use air applied to different inlets to move the valve in the opening or closing direction.
Uses an electric motor to provide torque to operate a valve.
Valve Position Sensors
Compare a control signal to a valve actuator’s position and move the actuator accordingly.