Incoming calls to the contact information on the picture or the following contact information Thank Tel: 13,935,186,687 QQ: 1774479104 I. Introduction BQG pneumatic diaphragm pump products new products, the pump is powered by compressed air, by changing valve, for commutation to the combined effect of the institutional and other parts, which in turn drives the pump chamber diaphragm reciprocating motion, resulting cavity differential pressure, in order to achieve suction function of the medium. It addresses the structural defects of the traditional diaphragm pumps (external with the valve, easy to hang, and the valve applicable short life), built with the valve, truly never crash and compact, long life and maintenance convenient, and performance far beyond the old-fashioned diaphragm pump. With the subject of coal safety professional mining pump, which is nothing more than the preferred pump for coal mine gas and prominent gas coal mine drainage and sewerage, and its absolute fire, explosion, especially suitable for high gas and petroleum, chemical and other departments. In addition, the pneumatic diaphragm pumps with submersible pump, pump, trash pump, mud pump, for a wide range. Second, the main technical parameters BQG-200/0.45 supply pressure (MPa) 0.4 0.5 0.63 drainage Head (m) 34 43 55 drainage flow (L / min) 150 200 250 Rated Suction (m) 4.5 5.6 Air Consumption (m3 / min) 1.8 1.9 2.04 Noise (dBA) sound pressure level of sound power levels of 88.3 89.4 90.3 101.3 102.4 103.3 Temperature (° C) 0-30 maximum particle diameter (mm) 12 Maximum working pressure (MPa) 0.63 inlet connector diameter G3 / 4 "out of the water connector diameter G1 / 2" Dimensions (mm) 390 × 340 × 620 Weight (kg) 32.5 three main features?, small size, light weight, the one portable can;? bearing lubrication-free, less wearing parts, simple structure, easier maintenance, save a lot of manpower and material resources;? c static sealing, no leakage point can be avoided run, run, drip, drain phenomenon;? d, the overall resistance of materials corrosion, materials applicability, no rust, in fear of contamination, not sensitive to temperature, suitable for food, pharmaceutical and other special occasions;? e, a unique valve structure, flexible operation, no dead spots, gas consumption Low pneumatic diaphragm pump features:??, small size, light weight, one hand can;? b, no bearings, lubrication-free, less wearing parts, simple structure, easy maintenance easier and save a lot of manpower and material resources;? c, static sealing, no leakage point, to avoid run, run, drip, drain phenomenon;? d, overall corrosion-resistant materials, *, materials applicability, no rust, in fear of contamination, not sensitive to temperature, suitable for in the food, pharmaceutical and other special occasions;