[Three rain valve to recommend the star product - Mechanical seal] Description: sewage pump is a pump and motor Siamese WQ8-22-1.1 pumps and sump pumps sneaked while working with the general horizontal pumps or vertical sewage pump compared sewage pump compact structure, small footprint. Easy installation and maintenance, a large sewage pumps are generally equipped with automatic coupling device can be automatically installed, installation and maintenance very easy. Continuous operation for a long time. Due to pump sewage pump and motor coaxial shafts short pumps, rotating parts and light weight, so the loads on the bearings (radial) is relatively small WQ20-7- 0.75 pumps, life is much longer than the average pump. There is no cavitation damage and irrigation water and other issues. Especially after a little to the operator has brought great convenience. Vibration noise, low temperature WQ6-18-0.75 motor pumps, environmental pollution. [Three rain valve to recommend the star product - Mechanical seal]: 1) selection should understand submersible sewage pump under normal conditions of use mean time between failures, mechanical seal life, bearing rating life motor design life, electrical insulation levels, the motor should be able to withstand the starting hour stop frequency. 2) submersible sewage pump should leakage protection devices and thermal overload protection device, a seal leakage monitoring device and reliable grounding device. 3) building outdoor cesspool can install non-sealed lid, no snorkel. Indoor cesspool (sump) should be installed sealed covers, set snorkel. Sealed covers are made of cast aluminum, gray cast iron and ductile iron three. WQ15-7-0.75 pumps, Ningde pumps, sewage pumps selected three rain provided by Valve Co., Ltd. Tianjin three rain. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) (www.tjsymf.com) strong, credible, in Tianjin seal industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the three rain valve into the brilliant and you work for a better future!