[Three rain valve to recommend Star Products - 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, motor insulation class, motor should be able to afford to stop the number of times per hour. 2) submersible sewage pump should leakage protection devices and thermal overload protection device 40SFB-13D-0.55 pump, seal leakage monitoring device and reliable grounding device. 3) Building outdoor cesspool can install non-sealed lid, no snorkel. Cesspool indoor (sumps) should install airtight lid, set the snorkel. Closed the covers are made of cast aluminum, gray cast iron and ductile iron three. [Three rain valve to recommend Star Products - Mechanical seal]: Product Overview: 1 using the large passage of anti-clogging design of hydraulic components, greatly improving the dirt capacity, and can effectively through the pump five times the diameter of the fiber material. and a diameter of about 50% of the pump diameter of solid particles. 2. Reasonable design, matching motor reasonable 25SFBX-13D-0.55, high efficiency, energy saving effect is remarkable. 3. The mechanical seal is double tandem seal, made of hard wear-resistant tungsten carbide, a durable, wear-resistant characteristics, can pump more than 800 hours continuous operation safety. 4. Pump compact structure, small size, easy to move the pump, easy installation, no need to build pumping stations, dive into the water to work 25SFB-8D-0.25 pump, greatly reduced project cost. 5. Pump oil chamber has water probe, when the pump side mechanical seal is broken, water into the oil chamber, the probe signal occurs, the pump implement protection. 6. According to user needs with automatic security control cabinet, the pump leak, leakage, overload and overtemperature monitoring to ensure reliable and safe operation of the pump. 25SFB-8D-0.25 pump, Chittagong pumps, stainless steel pumps selected three rain, rain valve provided by the Tianjin Trade Co., Ltd. Valve Co., Ltd. of Tianjin, 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, rain valve into the brilliant and you work for a better future!