Blue High automatic backwash filter ZPG-I 

 http://www.langaovalve.com/productshow.asp?id=909 
 Works 
 Piping system during normal operation, the pipeline will collect debris to filter the sewage outfall on the net, without dismantling any components to filter sewage contamination, simply open the drain valve to discharge. ① In the discharge valve before the filter before the first, off a small flow, the sewage. ② discharge valve when the shift direction of shift wash water to enter from the front of the steering valve, to filter external flow, then from the external filter back into the steering valve, debris all concentrated on the outfall, and then open the drain valve for sewage, played the best hair rinse the filter automatically all the features. 
 Free Float Steam Traps Free ball float tupe steam trap 
 Mechanical type of trap Mechanical traps 
 Mechanical type, also known as float type, is the use of steam condensate and the density difference, by condensation of water level changes, so that the float valve lift to drive on or off, to stop gas drainage to head to. Mechanical type of trap small undercooling, from working pressure and temperature changes. Water that row, where no water heating equipment, heating equipment can achieve the best efficiency of heat transfer. Maximum back pressure was 80%, the high quality of work, the production process heating equipment is the best trap. 
 Mechanical type traps have the freedom to float, free semi ball float, float lever, suspended upside-down type, etc. ----- 
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 Series: Filter http://www.langaovalve.com/product.asp?softid=2