[Three rain valve to recommend star products - mechanical seals] Description: submersible sewage pump with liquid level control means for automatic control. Types of liquid level control device other than the float type level switches, such as wastewater contained no or only a small amount of suspended impurities, can also be used Submersible pressure sensors and supporting secondary instrument. Liquid level control device installed in cesspool (sumps) should be as far away from the inner inlet. Single submersible sewage pump weighs more than 80kg cesspool indoor (sumps) manhole above the floor or beam should be embedded hook, lifting submersible sewage pump for use during installation and maintenance. [Three rain valve to recommend star products - mechanical seals] Description: sewage pump life drainage flow should be selected Design Flow: 1, when there is a displacement of adjustment is, according to the maximum hourly flow of life drainage selected. Fire elevator sump within the drainage pump flow is not less than 10L / s. Drain pump head height by lifting pipe loss calculation WQ130-15-11 pump OK, and then add a certain freedom head. Free head should adopt the 0.02 ~ 0.03MPa. Drain pump suction pipe and outlet flow rate of not less than 0.7m / s water pump, and not more than 2.0m / s. Public buildings should be set for each life drainage basin as a unit to set up a standby pump, usually advised to run interactively. Basement equipment room, garage floor drain washing or, in case of two and more than two drainage pump may not pump equipment. _ Pump Pump WQ130-15-11 selected three rain valve (Certified _ West, rain water pump provided by the Tianjin Valve Co., Ltd. Tianjin three rain Valve Co., Ltd. (www.tjsymf.com) (www. tjsymf.com) is a leader in Tianjin, seals, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs in three rain valve leadership with the staff warm welcome to consult with negotiations to create three rain valve better future.