Zhejiang is the water tower water supply equipment manufacturers phone, ideal replacement products high water tank, pressure tank water supply apparatus. Have to save energy, save and invest, no maintenance, reliable operation, the leading product in the future water supply equipment. I developed a frequency counter can also be applied in all sectors need to adjust the motor equipment, with a significant adjustment accuracy and energy efficiency, such as the installation of hoist and fan speed frequency counters are the best air flow adjustment device. Zhejiang, water supply equipment manufacturers phone users less than a water pump out the water, according to curb the consumption in the system have a pump frequency commissioning, when the water in the pipe system pressure loss increases, then the pressure sensor to the test measurement the signal is passed to curb the unit logos, logo running through judgment, distribute commands to the drive, curb pump motor, the speed is accelerated in order to protect the system pressure is fixed forever, as opposed to when the water cut small, so slight pump speed to maintain a constant pressure. Zhejiang negative pressure water facilities WFG no vacuum suction steady flow variable pressure water supply facilities division office principle is based on semi-automatic adjustment changes the user running water pump station and a number of pump speed, so that the outlet pressure pumps to maintain eternal fixed. When the water is greater than a water pump, the pump is switched to the first-frequency operation, the second pump start frequency commissioning, when the water is greater than two pumps out water, the semi-dormant one or two sets of pump operation . Throughout the children running, the whole story has not changed to maintain constant pressure system that pumps the whole story office in the high zone, both to protect the user constant pressure water supply, but also save energy. Company Name: Fuyang Hua Heng Industrial Co., Ltd. Contact: Miss Zhang (Ms.) Tel: 0571--23298080 supply equipment www.huaheng-filter.com/index.asp