# How do you increase the discharge pressure of a pump?

Flow Rate Reduction A reduced flow rate via the pump might be one reason of greater discharge pressure. Figure 2 depicts the pump curve, which illustrates that reducing the flow rate leads the pump to function further back on its curve. The pump head and discharge pressure would be increased as a result. Figure 2: formalized paraphrase of how increasing pump discharge pressure works. Source: http://www.ehow.com/facts-statistics-things-know-about-humans-5465245_video.html

Increasing the suction pressure will also increase the discharge pressure. This is because the pump needs to work against a higher force (suction pressure) to move the fluid.

Reducing the viscosity of the fluid being pumped can also lead to an increase in discharge pressure. This is because the pump needs to work against a lower force (viscosity) to move the fluid.

Finally, increasing the volume of fluid being pumped at once will also increase the discharge pressure. This is because there's more fluid pushing down on the pump with each stroke, so it needs to exert less force to move it.

These are just some of the many factors that influence pump performance. There are other factors too, such as the type of pump being used and how well it was designed for its specific application.

Pumps are very efficient tools for moving fluids from one place to another.

## How do I increase my pump capacity?

By expressing pressure as "head," the pump curve is applicable to any liquid, regardless of density. When we cut holes in the discharge pipe at successively lower levels, the head is effectively lowered, and the pump's capacity slowly increases. There are two methods used for cutting these holes: drilling and punching.

If you're pumping milk by hand, it's easy enough to increase the capacity of your pump by using larger holes or adding more pump heads. But what if you have a motor-driven pump? The only way to increase the capacity of that machine is by replacing it with a bigger model!

The volume of fluid that can be moved by a pump is called its "capacity." The size of the pump's impeller (or the number of blades on a centrifugal pump) determines how much capacity it has. A large impeller will move more fluid over a given period of time than a small one; a single-stage electric motor will drive a large pump but not a small one.

When you install a new pump, it's helpful to know its capacity in gallons or liters. This information can be found listed on the manufacturer's website or in the documentation that came with the machine.

## What happens if the discharge valve of a reciprocating pump is closed?

Closing the discharge valve raises the pressure but has no effect on the flow. Reciprocating pumps are substantially slower than centrifugal pumps. The packing and sealing life of the machine might be jeopardized by raising the pace. However, closing the discharge valve will reduce the flow rate.

## Why do I have high discharge pressure?

The cooling medium (air or water) flowing through the condenser is one typical source of excessive discharge pressure: either there isn't enough or the temperature of the cooling medium is too high. The noncondensables will take up space in the condenser, leaving less area for the refrigerant to condensate. This increases the risk of overpressurization.

High suction pressure can result from any of several problems with your compressor, such as a defective compressor motor or drive belt. If the discharge pressure is higher than the suction pressure, there is no way for the system to release any heat absorbed by the refrigerant. This would be an indication that the compressor is not turning on; however, this could also be caused by other problems with your home's wiring or plumbing connections to outside equipment.

If you are having trouble determining the cause of your high discharge pressure, consider hiring a professional HVAC technician to inspect your system. He or she may be able to identify the problem while you watch, saving you time and money.

## How can you tell if a pump is suction or discharge?

The discharge pressure and suction vacuum should be monitored while the pump is running to ascertain the reason of any drop in flow. If the pump discharge pressure and suction vacuum were taken at startup, the most recent data should be compared to the original measurements. A change of either number over time indicates a problem that needs attention.

A pump is said to be "discharging" when it is producing high-pressure fluid which flows out through its outlet. This means that the pump is working against its mechanical seal (or other type of differential pressure device) to push fluid out through the outlet. Pumps do not produce high pressure by themselves; instead, they convert rotational power from your motor (or another source) into high pressure fluid.

Pumps can also be "suction-type", meaning that they are creating low pressure on their inlet side (below body temperature and water pressure for example) so that fluid will come in contact with the impeller and be pulled into the pump. These pumps do not have an outlet, but rather feed fluid back into the inlet port where it can be returned to storage or used again.

Finally, some pumps combine the functions of both discharge and suction types, being able to operate as either depending on how they are connected to their driving mechanism and/or receiving vessel.

##### Gordon Thomas

Gordon Thomas loves to garden and take care of plants. He has been doing it for as long as he can remember. His mother was a flower arranger and she always made sure that there were flowers in every room of the house. She taught him how to grow them too, so he never had to buy them at the store whenever she went on a date.

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