Actuators for Chilled Water Valve – These chilled water actuators control the flow rate for a chilled water system in a data center. There are various sequence of operations for chilled water systems and the sequence of operation is usually always different from one chiller plant to another chiller plant.Actuators for Chilled Water Valve | DDC Commercial SystemsIt depends on the components in the loop, the application the chilled water system is supplying cold water for, and what the demand of the system requires for the chiller plant. Some chilled water valves control two-way valves while others control three-way valves. A three-way valve can either be a mixing valve or a diverting valve but the actuators controls the flow in either type of application. Other actuators modulate a valve based on demand. The actuator usually receives its command for position for control from the DDC system or another type of control system. In this case, these actuators are controlled by DDC. In the sequence of operation the chiller plant will have a valve line-up usually in a valve matrix that was compiled by the original design engineer and this valve matrix shows the default position of the valves which are controlled by the actuators.

Some applications in the piping that are controlled by the actuators include:Actuators for Chilled Water Valve - ApplicationsPrimary – Secondary system where a primary loop is attached to a secondary loop via a decoupling loop. The primary loop is constant volume while the secondary loop is variable capacity.Variable Flow Primary loop only has one loop and the flow varies according to demand and pressure set point. For better flow control a variable flow primary loop system will have a bypass loop for better control of loop pressures. In the bypass and on the loads you will find actuators that control chilled water flow.Other applications where the control actuators can be found is in a free cooling sequence of operation where the chillers are shut down and bypassed completely to take advantage of free cooling when the temperatures are optimal for a free cooling application.The actuators control the amount of chilled water going to the evaporator coil by automatically moving a valve.

Chilled water systems provide air conditioning typically to large buildings. These air conditioning systems, or cooling systems, use cold water which is piped through a coil in a large air handler. The control actuator can modulate allowing only a certain amount of cold water to reach the evaporator coil.Actuators for Chilled Water Valve - EconomicsDepending on the cooling supply air set point will depend on where the control actuator will modulate the valve in the piping. Chilled water systems offer an economical way of cooling large commercial buildings. These air conditioning systems are a great alternative to direct expansion constant volume air conditioning systems. There are constant volume air conditioning systems which use chilled water but most constant volume air conditioning systems use direct expansion. Many chilled water systems are used for VAV systems where there are many zones on a large air handling unit. Both constant volume air conditioning system and VAV zoning air conditioning systems can be either direct expansion or chilled water systems.

Actuators for Chilled Water ValveControl actuators, in chilled water systems, offer control of the flow of chilled water which is routed to the evaporator coil. This photo shows a new installation of a control actuator and piping. The control actuator is modulating and on a three-way valve. ac unit for 600 square feetThe valve will modulate depending on the supply air temperature of the air handling unit which provides air conditioned air to the space. what size ac unit for a 2500 square foot houseThe piping was installed with several unions so that if the valve malfunctioned it could easily be replaced.cleaning wall mounted ac unitThe air handler being served by this control actuator and piping serves a large commercial kitchen.

In the summer it is critical for the air conditioning system to remove the heat produced by the ovens and grills so that workers remain safe and comfortable. The air conditioning increases the workers productivity and morale. The piping feeds chilled water to an evaporator coil inside the air handler. The blower in the air handler moves the air from the kitchen across the coil where the heat in the air is absorbed into the coil and the water. The conditioned air is then ducted back into the kitchen at a cooler temperature than when it left the kitchen through the return duct. ConclusionChilled water actuators give chilled water systems the ability to precisely control chilled water systems and precision control results in added efficiency of the chilled water system. The chilled water actuators are typically controlled by the building automation or DDC system that give the chilled water actuators added control and precision control.To learn more about HVAC and chilled water systems click here.

Actuators for Chilled Water Valve Fire and Smoke Actuators Trade Shows and Events Adaptive stroke of actuator utilizes full control signal for maximum resolution. Visual sliding stroke indicators allow quick installation and system checks. Assembly can be mounted with valve stem horizontal to the pipe. Self locking valve coupling to ensure proper valve-actuator connection. Pressure compensated flanged globe valves utilize a balanced plug design perfect for high close-off requirements. The comprehensive line of globe valves is available in sizes from ½” to 6” and fulfills the requirements of ANSI 125 and ANSI 250 applications. Utilizing either bronze or stainless steel trim and fitted with either spring return, non-spring return, or electronic fail-safe actuators, globe valves are the perfect fit for applications such as unit ventilation and air handling units as well as water/steam control in other HVAC systems. 2-Way and 3-Way Globe Valves with Non-Spring and Fail-Safe Actuators