Fisher Control Valves Control valves are valves used in pipelines to control operating conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to a process signal. Fisher?, Baumann?, and POSI-SEAL? brand control valves can be located via

Recently, we announced the release of the

The control valve is the traffic cop in your water softener system. It determines when it is time to clean those plastic beads which are now coated with calcium and magnesium. Older style units use a timer, newer models use a computer controlled meter that determines when it is time based on actual

For control valves, the operating medium is still mainly pneumatic, but the positioning intelligence has moved to a digital interface. This means that with enhanced control, there also is an opportunity to gather a significant amount of diagnostic data on the control valve assembly itself.

Directional control valves are designed to control direction of flow, while actuators maintain required speeds and precise positions. Magnetorheological (MR) fluid is a controllable fluid. Utilizing the MR fluid properties, direct interface between magnetic fields and fluid power is possible, withou

Control valves are typically applied in continuously throttling services to maintain a specific set point or operating range for different process variables, such as pressure, temperature and flow rate.

The control valve was adequately controlling the process, but the actuator required more thrust than typical to move the valve back and forth. The OVD technology detected that hysteresis had quadrupled in one month and found that positioning accuracy was poor.