BELL VALVE | ACTUATOR | HVAC MANUFACTURER

What is motorized IRIS dampers ? MOTORIZED IRIS DAMPER • Retracts fully for duct cleaning • Finger tip control with adjustable set-points • Interlocking galvanized steel plate construction • Automatic measurement and control of airflow • Input signal ： 0-10 VDC, 2-10 VOC or 4-20 mA ,,0-20mA  signal • Capacities: 15 cfm to 4,000 cfm  , 4,000cfm to 20,000cfm   DESCRIPTION The   motorized iris damper assembly provides all the benefits of the standard IRIS damper , plus adds an electronic actuator to allow for remote control of the damper. The electric iris damper is available in all series   , and permits the damper to be controlled by a building control system, or operate as a standalone unit through the use of switches. CONTROL FEATURES • Input :  0-10 VDC, 2-10 VDC or 4-20mA  ,0- 20mA   • Adjustable min/max po r ts for airflow settings • 2 position or modulating control • Can be f ully open damper  for duct cleaning • Airflow taps for meas...

                   How can capillary tube mat be used in residential applications                           For comfort and health, U se bell capillary tube mat ! In the use of residential heating and cooling air conditioning, the requirement of capillary tube mat for water supply temperature is: 18℃ high temperature cold water for cooling in summer , and 35℃ hot water for heating in winter, which provides a convenient condition for the utilization of renewable energy. Common renewable energy sources are air source heat pump , ground source heat pump and water source heat pump . At present, capillary tube mat radiation cooling and heating is mainly used in senior hotels, large office buildings, and residential buildings with higher requirements for comfort. For example: new house renovation, renovation of the old house . The capillary tube  mats is installed on t...

How to use capillary tube mat in strawberry planting   www.bellaut.cn ,    www.bellauta.com   whatsapp/wechat：+8613802124431 How to use capillary tube mat in strawberry planting Capillary tube mat solves the biggest problem of off-season planting in winter - indoor temperature, soil temperature and air humidity In winter, the greenhouse temperature is generally increased by burning stoves or other heating methods. These heating methods only raise the temperature of the air and the surface of the ground, but it is difficult to raise the temperature of the root system of plants. Like a warm house, but in a cold bed, uncomfortable, plants and people are the same. Previous traditional heating methods were either too costly, too short-lived, or the ambient temperature was uneven. The capillary tube mat has large heat dissipation area, uniform heat dissipation, and low temperature heating does not harm the plant roots, thus solving the problem that the greenhouse...

      Application of capillary tube mats work in raising chickens and ducks.        Temperature, humidity, fresh air is the farm very important 3 index. At present the vast majority of chicken house, duck house is to open the window to adjust the temperature and humidity inside the house as the main means to ventilation, by the quantity of doors and Windows of open and close, and the length of time to control ventilation. Temperature, humidity, fresh air is the farm very important 3 index. At present the vast majority of chicken house, duck house is to open the window to adjust the temperature and humidity inside the house as the main means to ventilation, by the quantity of doors and Windows of open and close, and the length of time to control ventilation.   The temperature and humidity required by chickens and ducks are different at different week ages. With the increase of week ages, the ambient temperature and humidity required by chicke...

How to use electric control valve in boiler system          Electric control valve is mainly used to adjust boiler feed water , control boiler steam and cooling water pressure, temperature and flow. It is an important part of the automation control system.         The electric control valve shown in the figure is a desuperheating water regulating valve used in a waste heat recovery boiler in a metallurgical sintering plant.         This is an intelligent non-invasive electric control valve with various protection functions, receiving and feedbacking 4-20mA current signals. The performance is stable and the products sell well all over the world.       Non-intrusive electric globe control valve have electronic controls located in a separate sealed enclosure within the actuator. Position and torque limits can be set without opening the control compartment, Non-intrusive actuators allow adjust...

                       How to use capillary tube mats  in mariculture                                 www.bellauta.com Temperature control is a key technology in industrial sea cucumber breeding . At present, the boiler is often used to heat seawater and extract groundwater as the cold source to control the temperature of aquaculture water. This method is not economical and is not conducive to energy conservation and environmental protection   As a new temperature control method, capillary tube mats temperature control technology has the advantages of high efficiency, energy saving, economy and environmental protection. At present, capillary tube mats technology has been widely used in the HVAC  system of buildings. Similarly, the application of capillary tube mats technology in the heating and cooling of water for sea cu...