A positive displacement pump in Melbourne is a pump designed to move fluids at a very steady rate through a system. The pumps can handle viscous fluids, which create more resistance and flow at lower speeds. The main reason why PD pumps aren’t as common as dynamic pumps is because they can’t achieve the high flow rate needed for most industrial applications. However, PD pumps are ideal where low flow rates are preferred. They are more efficient for applications that involve high pressures, high viscosity fluids, or variable system conditions. They tend to provide a gentle and consistent flow for shear-sensitive fluids.
How PD pumps work
PD pumps are pumps that displace a fixed volume of liquid with each motion of pumping elements. PD pumps provide pressure by contracting and expanding space between the pumping elements. The direct mechanical application of these pumps means that the rate of flow generated by PD pumps is constant and varies based on the speed of the pump. The moving parts in PD pumps operate in either a reciprocating or rotary manner.
Rotary pumps
These are pumps that move fluid using the rotating mechanical motion. When the rotor of the pump rotates pin a circular motion, fluid is drawn into the pump and forced out of the spaces created by the pump’s moving parts. A rotary pump can be distinguished based on both the number and type of rotors used in the pump.
Reciprocating pumps
These pumps use linear motion to move fluids. They use a diaphragm or piston which draws the fluid being pumped in and pushes it out using check valves to direct and regulate flow through the system.
Selecting criteria
When choosing a positive displacement pump, it is important to remember that these pumps come in different types, sizes and materials. It is therefore important to know what you really want to use the pump for before choosing. Here are some of the most important things to consider when choosing the right PD pump.
Performance of the pump
When choosing a PD pump, there are some performance specifications you need to consider. These specifications include the pressure, flow rate, efficiency and power. The details of these specs are usually explained in the manual of the pump.
Pump type
PD pumps come in different types. The two main categories are rotary and reciprocating pumps. When choosing the right pump type, you should know the features of the fluid you want to pump and choose a pump that is the most efficient for pumping your type of fluid.
Materials
There are different types of pump materials you can consider when buying a PD pump. some of the most common pump materials include bronze, cast iron, ceramic, nickel alloy, steel and stainless-steel alloy and plastic.
When choosing the right material for your positive displacement pump Melbourne, it is important to consider the chemical compatibility of the material, the sanitation of the material when choosing a pump for the food and beverage industries, the wear of the material when choosing a pump for abrasive fluids and so on.
