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BELIMO Holding AG, an international group of companies, is located in Hinwil, Switzerland. [3] The company develops, produces and markets actuators for controlling heating, ventilation and air conditioning systems. Actuators and control valves make up the company's core business, and it is considered a global leader in motor control for HVAC. [4]
Hydraulic solenoid valves are in general similar to pneumatic solenoid valves except that they control the flow of hydraulic fluid (oil), often at around 3000 psi (210 bar, 21 MPa, 21 MN/m 2). Hydraulic machinery uses solenoids to control the flow of oil to rams or actuators. Solenoid-controlled valves are often used in irrigation systems ...
Protech Instruments & Systems, an instrumentation company, was purchased in 1985 to expedite the development of Pakscan, a digital bus control system for actuators. [6] In 1999 it bought Fluid System Srl, an Italian actuator business, in 2000 it bought Skilmatic in Leeds [6] and in 2002 it acquired Jordan Controls, a United States actuator ...
Planetary roller screws are used as the actuating mechanism in many electromechanical linear actuators. Due to its complexity, the roller screw is a relatively expensive actuator (as much as an order of magnitude more expensive than ball screws), but may be suitable for high-precision, high-speed, heavy-load, long-life, and heavy-use applications.
The Pressure Equipment Directive (PED) 2014/68/EU (formerly 97/23/EC) [1] of the EU sets out the standards for the design and fabrication of pressure equipment ("pressure equipment" means steam boilers, pressure vessels, piping, safety valves and other components and assemblies subject to pressure loading) generally over one liter in volume and having a maximum pressure more than 0.5 bar gauge.
Delco ECU used in General Motors vehicles built in 1996. An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine.
The space industry's interest in amplified piezoelectric actuators is due to the high power density of these actuators, high positioning accuracy, high reliability, and low power losses when used in quasistatic operation. Amplified piezoelectric actuators have no sliding parts due to the flexural hinges and do not require lubrication.
Larger valves are available for larger systems and these may be more sophisticated. They usually have a manual bleed valve or screw. They are also dismantlable for cleaning or repair. The float linkage may have multiple lever arms, in order to give greater mechanical advantage on the valve. [5]