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Hydraulic Diaphragm Metering Pump
Hydraulic Diaphragm Metering Pump
Metachem Corporation offers hydraulic diaphragm metering/dosing pumps.
Product & Technology News
- The hydraulically balanced diaphragm pump is a hybrid design; like the other pumps its power end and capacity control are common
- This, however, is where the similarity ends, since the plunger does not come into contact with the pumped fluid, and the actuation of diaphragm is by hydraulic power instead of mechanical power
- The pump consists of three sections which are the drive end, hydraulic chamber end, and the liquid end (diaphragm head) the drive end mechanism for a plunger pump and hydraulic diaphragm pump is the same
- The diaphragm head is fitted to the stroke length control mechanism; the plunger reciprocates within a precisely sized cylinder at an established stroke length, displacing a volume of hydraulic liquid, not the product liquid
- The hydraulic liquid is stable and has excellent lubricating qualities; the plunger uses the hydraulic oil to move the diaphragm forward and backward, causing a displacement which expels the product liquid through the discharge check valve and, on the suction stroke, takes in an equal amount through the suction check valve
- The diaphragm isolates the liquid product being contained within the liquid chamber and check valves
- 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 fluids and other hazardous fluids
- When properly installed and working within the recommended temperature range and not affected by corrosion or abrasion, the diaphragm has an unlimited life.