No negative pressure: no negative pressure is relative to the negative pressure, the pump is running positive pressure, while the vacuum pump is to produce negative pressure, negative pressure. General water supply equipment is installed directly on the water pipe network, direct pumping from the pipe network, then when the water is less than the amount of water easily lead to suction pipe net negative pressure that temporary vacuum state. How to achieve negative pressure? Water supply equipment to take negative pressure eliminator (vacuum suppressor) and vacuum protection cut-off, smart current limiting technology to ensure that equipment does not produce negative pressure does not have any impact on the water pipe network. Negative pressure device principle: no negative pressure device by negative pressure eliminator and negative pressure protection device. Negative pressure eliminator works: also known as vacuum suppressors, the main function of the equipment operation is to inhibit the negative pressure in the pipe network, so as not to affect the surrounding water. He is mainly by a float to work, according to no negative pressure to adjust the water level within the tank lift driven float up and down vertically move the control valve on and off, so as to adjust the tank intake and exhaust to break the tank The vacuum environment that may be formed when the water is not full and the suppression of the vacuum inside the tank are eliminated. Vacuum protection Cut-off and smart current limiting technology are technologies that detect and protect underpressure with detectors installed in the equipment. After the detector detects the negative pressure is generated temporarily, the current limit protection is performed by the microcomputer controller. When the data reaches the set value, the equipment will automatically stop its protection. After the negative pressure is removed instantly, the equipment will be powered on automatically without affecting the water supply. Learn more about Nansen Pumps
Aluminum Roller Shutter Door
Material characteristic: Using high quality aluminum extruded shutter profiles, multi-layer painting or film layer surface have excellent scratch resistance function, not decay, wearable and anti-collision.Nice white profiles, accepting mass customization according to users requirements(light gray, brown, cream, wood, fused, sand color and light sand color ,etc.)
Integrated protection and decorative features together,the best replacement of traditional theft network security replacement; flexible way open ways, supporting hand control, group control. The door could be your safe rescue channel when in emergency.
When in state of close, support ventilation and lighting, this contribute to enhance the cooling and heating effect of air conditioner, ensure safety, comfortable, energy saving, noise isolation and aesthetics.
Aluminum Roller Shutter Door,Commercial Aluminum Roller Shutter Door,Aluminum Alloy Roller Shutter Door,Color Steel Aluminum Roller Shutter Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfgaragedoor.com