Description: 
The diaphragm metering pumps are offered by V K Pump Industries. The Multiflo HD models comprise of hydraulically-actuated diaphragm liquid heads incorporating a diaphragm-activated replenishing system (DARS). These diaphragm heads are fitted on a proven stroke length control mechanism of Multiflo series plunger type metering pumps, which have been in use for several years. A stroke length controllable plunger pressurises and pulses the oil in the hydraulic head. These pulses are transferred to the diaphragm, which creates a pumping action. The diaphragm also acts as a perfect seal between the hydraulic oil and the liquid being pumped, creating a hermetically sealed system making the pump safe for toxic/hazardous fluids, economical for costly fluids and ideal for slurries. The salient features of the pumps are: constant hydraulic volume, no overfilling and no manual field adjustments are required, low NPSH requirement, which is lower than conventional pumps, no diaphragm support plates, thereby increasing the pump capability to handle liquid with slurries and also high viscosity fluids. These pumps have volumetric air bleeding that purges hydraulic fluid continuously and automatically, thereby ensuring metering accuracy.
