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How sensitive is the temperature control valve? What is its sensitivity level?

2020-09-16View Original

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  Electric temperature control valve: If the steam temperature is below 220°, a temperature control valve can be used. Avoid the pipelines above the control valve, especially pipe fittings such as flanges and couplings, to prevent leaks that could damage the actuator. When the equipment is operated for the first time, due to the high temperature rise requirements associated with warming the pipes and the secondary water, the temperature control valve operates at full capacity, which can lead to damage. It is recommended to use a bypass for steam and water; once the temperature on the secondary side approaches the set value, the bypass should be closed completely. After the system has been in operation for some time, it is essential to clean the filters to prevent blockages that could cause damage. The piston area has been increased, the throttling structure and sealing design have been altered, and the flow area has been expanded, thereby **improving performance in terms of sensitivity, flow rate, and lifespan. Suitable for steam pipelines with high flow rates and significant flow variations. Turn the temperature control knob to a setting above 38°C and activate the flow switch. At this point, no cold water should flow out of the mixed water output port of the temperature-controlled mixing valve; then turn the temperature setting knob clockwise to the position that delivers only cold water.   When the pressure sensor detects an increase in the valve pressure, the opening degree of the pressure relief valve decreases ; When a pressure drop is detected after the pressure reducing valve, its opening degree increases to meet the control requirements. The thermal bulb can change its volume in response to changes in the surrounding temperature, which in turn causes the valve stem to move, thereby regulating the amount of water flowing through the radiator and thus controlling its cooling capacity. The set temperature can be adjusted manually, and the thermostatic valve automatically controls and adjusts the water flow to the radiator according to the set parameters, thereby achieving the goal of controlling the indoor temperature. The structural forms of the valve body in temperature control valves typically include two most common types of two-way valves: straight-through and corner-type valves. These valves usually use a screw-type valve stem, with the rotation of the handle being converted into linear displacement of the valve stem. Generally, a larger amount of liquid is required to achieve the same thermal expansion displacement in liquids; as a result, the temperature sensor has a larger size, and consequently the valve head also has a larger size. This results in an unbalanced proportion when combined with a small valve body, so a solid-type valve head is more aesthetically pleasing.

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