Home Ing Westad AS Thermostatic Control Valves

The solenoid valve receives an electric signal which energizes its coil and allows air to flow either in or out of the pneumatic actuator, subsequently opening/closing the ball valve. If you’re not familiar with how a ball valve works, it’s pretty simple. A ball valve is a quarter turn valve that uses a ball with a hole drilled through it to control the flow of media. The hole is referred to as the port or orifice and when opened, it’s aligned with the valve body to permit flow. The ball is contained within a body and uses a stem that is connected to the output shaft — in this case, of a pneumatic or electric actuator. From the closed position, it’s turned 90° counterclockwise to open and 90° clockwise to close.
Kele also has it’s on private labeled brand of valves and actuators to meet your needs. We carry all control valve types, including ball, butterfly, globe, solenoid, and zone valves. If not in stock for assembly, Kele can expedite your orders depending on the valves needed for your job. The control valve is the last control component that is used the most frequently in process control sectors. There are multiple Control Valves for Sale on Linquip, and control valves are offered by a range of Suppliers & Businesses, manufacturers, and Distributors. Pilot operated type self-actuated temperature regulators are fast in response, narrow proportional band.
Both types of actuation have their pros and cons, so it’s important to be sure you select the right one for your intended application. Ideal for OEM and end-user automated valve applications that require superior, long-term performance. N-line separators DS-1 and DS-2 separate condensate efficiently by using the centrifugal force of steam or air created by introducing it into a specifically shaped path. Because of the simple structure of the drain separators, pressure loss is minimized, enabling clean, dry steam or air to be fed to equipment.
Tuning a control valve can be compared to adjusting the taps under a shower to get the water temperature right. If hot water is turned on first, the control valve will become the cold water tap. The effects of increasing the cold water flow take a while to feel .
Whether you are designing a regulation system for irrigation or merely looking for a new replacement, you will be able to find whatever type of temperature control valve that you need. Our products vary from check valves to pressure reducing valves, ball valves, butterfly valves, thermostatic mixing valves, and a lot more. Control valves are an integral part of various industrial applications, such as power generation units, oil and gas plants, fire prevention systems, and more. These control valves are available in different types and specifications.
Conversely, when the fan is on, the current relay contact closes which energizes the EP valves, thereby allowing the controller signal to modulate the controlled devices. thế giới van is a single set point thermostat controlling both the heating and cooling valves. For these valves to sequence properly, the control action and spring ranges must be properly selected. In this example, the heating valve was selected to be normally open so that even if the control air system failed, heat could be supplied to the space. The normally open heating valve requires that the thermostat be direct-acting so that a drop in space temperature will result in a drop in controller output signal, opening the hot water valve. Control power at 24vac is supplied to the valve actuator, which has an internal 24vdc power supply to power the controls.
The controller is reverse-acting because upon a rise in duct pressure, we want the inlet vanes to close. Because the vanes are normally closed, they will close upon a drop in signal. This is in the opposite direction as the change in duct pressure, so the controller must be reverse-acting. This signal, which typically is in the range of 0–2 inch wg, must be amplified so that it can be used by a pneumatic controller. Heating and cooling shall be controlled to maintain room temperature at set point (70–75°F, adjustable) by a single set point proportional room thermostat modulating two-way control valves.

Leave a Comment