... Pneumatic single diaphragm pump is mainly composed of the pumpbody,the air supply,exhaust system, ... smelting,toxic,harmful,corrosive and strong areas of high concentration liquid pump advantage is particularly evident ... seals,structure simple,the movement is only part of the diaphragm and check valve in the ... pump ODS series,pump and check valve of the body of cast iron,lined with rubber. Can also be ...