Double-diaphragm pump QBK series

for chemicalsair-drivenself-priming

An air driven diaphragm pump moves fluid by the alternate and repeated back-and-forth movement (strokes) of two flexible membranes or diaphragms mounted on a common shaft (Figure 1). Although diaphragm pumps can be driven directly, with the shaft connected directly to a motor, an air driven double diaphragm pump pump uses compressed air with a sophisticated distribution system directing the air alternately to two air chambers on the opposite sides of the diaphragms. Application: • Corrosive chemical • Volatile solvents • Viscous,sticky fluids • Shear-sensitive foodstuffs and pharma product • Dirty water and abrasive slurry • Smaller solids • Creams,gels and oils Advantages: • Handels a wide variety of fluids with high solids content • Self priming • Ability to run dry • Explosion proof • Pumping efficiency remains constant • No mechanical seals, couplings, or motors • Can not overheat Limitation: • Low maximum speed • Not very energy efficient • Pulsed flow - requires dampener for reduction Supply material of range: Pump casing material: Aluminum(AL), Cast Iron(CI), Stainless steel(SS), Polypropylene(PP),Teflon lined(PTFE) Diaphragm: PTFE, Nitrile Butadiene Rubber(NBR), Viton Ball valve: Nitrile Butadiene Rubber(NBR), Stainless steel(SS), PTFE Valve seat: Nitrile Butadiene Rubber(NBR), PTFE