1. Suitable for use in flammable and explosive environment,because it using air as powerand does not heat and produce sparks. 2. The PTFE diaphragm can be used for chemical properties relatively volatile liquid, corrosive medium. 3.The liquid can be conveyed by diaphragm pump is widely, the viscosity from low to high, from corrosive liquid to viscous liquid, and also particle liquid 4.The flow rate can be adjusted infinitely 5.The reversing valve adopts super hard anodizing treatment, which has the characteristics of lubrication and corrosion resistance, and the stainless steel ball/ball seat used also has the characteristics of corrosion resistance and wear resistance. Welcome and I wish you a happy life, my friend., Manufacturer: BGAZA