Beijing piston metering pump manufacturers high-quality piston metering pumps Defeng 
 SJ-YM-type metering pumps are adjustable stroke oil diaphragm pump, the pump is widely used in food, beverage, chemical industry, experience as full compliance with health standards. 
 The pump and stainless steel wetted parts, one-way cutting fine selection of polyurethane rubber seals, silicone rubber diaphragm, which can add a variety of medium PH range 3-11. For media containing solid particles, particle diameter should be less than 50 microns, not more than 25%. 
 The pump is compact, well-made parts, smooth, widely used by users. Its structure is divided into four parts, including gear box, gear box, balance room, pump body. Two helical gear box, gear box by the eccentric shaft, regulatory agencies and other components. Gear box is closed, internal full of oil, so that parts can be in good lubricating conditions of operation, easy to wear. Pump parts include piston, diaphragm, one-way valves and other components, piston and gear box connected to each other back and forth movement, balance room for traffic changes in the mediation and over-voltage protection. Two-way valve to complete inhalation and output of liquid, measured on the agent's expected to add.