Pneumatic diaphragm metering pump has four kinds of materials: engineering plastics, aluminum, cast iron, stainless steel. Pneumatic diaphragm pumps are based on different liquid media were nitrile rubber, neoprene, fluorine rubber, PTFE, polyhexamethylene. To meet the needs of different users. Placed in a variety of special occasions, used to pump a conventional pump can not be aspirated medium, have achieved satisfactory results. Pneumatic diaphragm metering pump installation process: 1, pneumatic diaphragm metering pump installation and start: The diaphragm metering pump placed as close to the product where possible, the suction pipe line the shortest, reducing the number of configuration components, do not reduce the pipe size. To extend the life of the diaphragm, keep the pump as close as possible to the fluid being pumped and require a slow pressure adjustment mechanism to extend the diaphragm life at inlet pressures in excess of 10 feet (3 meters). If hard piping is installed, use a short hose between the pump and the piping. Hoses can slow pipe vibrations and distortions, and a surge tank is recommended to further reduce the pulses in the fluid. 2, diaphragm metering pump gas supply: metal diaphragm pump supply pressure shall not exceed 125PSI (8.6BAR), plastic pump supply pressure shall not exceed 100PSI (6.9BAR). Connect the air inlet of the pump to the air supply with enough capacity and pressure to meet the design requirements. If the air supply line is a hard pipe, connect a short hose between the pump and the pipe to reduce distortion. In addition to the air inlet cap, the air intake pipe, the pressure regulator filter weight must also be supported by some means. Failure to support the pipe may damage the pump. Pressure regulators must be installed to ensure that the supply pressure does not exceed the specified range. 3, diaphragm metering pump before operation check: diaphragm metering pump before work, inspect all ** fixtures to prevent relaxation, tighten the loose place to avoid leakage, with the card attached to the card as described in the method of fixing. 4, diaphragm metering pump intake and start: start, the air valve open about 1/2 to 3/4 laps. After the pump is started, open the air valve to increase air flow to achieve the required flow rate. 5, pneumatic diaphragm metering pump exhaust: If the diaphragm is broken, the extracted liquid or gas will enter the pump air port, was discharged into the atmosphere, when the extraction of dangerous or toxic substances, the need to pipe to the appropriate place for safety deal with. If the pump sink into the liquid work, the gas to be discharged from the liquid level, the exhaust pipe can not be less than 1 "(2.45CM) .Decreasing the exhaust pipe size will limit the gas flow, reducing pump usage .When the material level is high In the pump, the discharge outlet should be at a higher place to prevent siphon phenomenon.Under a certain temperature and humidity, the discharge of gas may freeze up, the use of gas drying can eliminate most of these problems. 6, pneumatic diaphragm Dosing pump after use: If used to transport easily curable materials, to prevent damage to the pump, thoroughly clean the pump after each use (after use, the product left in the pump has dried or stuck to the pump, This will cause problems with the diaphragm and the valve prior to the next start-up.) At freezing temperatures, the pump must be drained dry after any use. Notes on Valve Lubrication: Diaphragm Metering Pump Air Distribution Valve and Guided The valves are designed with no oil and this is the ideal working condition. In some cases, such as personal hobby or the air quality is very poor, but also on the compressed air SUPPLY FOR LUBRICATION, COMPRESSED AIR SUPPLY SYSTEM Once properly lubricated, the pump's air system can work accordingly. Proper lubrication requires the use of an air line lubricator, set to deliver a drop of no-cleanser oil per 20 SCFM of air at pump operation Check the performance curve of the pump open quantitative.Pneumatic diaphragm metering pump feed pipe generally do not install the valve, the direct election caliber and diaphragm metering pump match the tube on it, pay attention to the feed pipe to have a certain strength, or tube will be deflated when working The impact of feed.General in the discharge tube plus a valve to see the scene conditions, is installed manual valve or automatic valve.Pipeline, valve selection and pay attention to the nature of the material (such as acid, alkali, corrosive, etc.) The air valve generally need to install triple (pressure regulating, drainage, lubrication), the general imported pump without lubricating oil. Ball valve, flow control valve (optional) .If the demanding occasions also require additional regulator, Pressure gauges, leak detectors, etc .. Such as the installation of solenoid valves, metering controllers, but also the diaphragm metering pumps into metering pumps, for remote control feeding.