A plunger is known to be used in various applications and tech processes within an industrial environment for different types of facilities. It is high-powered, thus making it capable of generating very high pressure. With the scale of pressure that it can produce and also due to its durable and long-lasting frame, industries utilize it to aid them in the moving of heavy or highly viscous substances like oil. Applications for Plunger Pumps:

  • Water hydraulics
  • High-pressure cleaning
  • Descaling
  • Oil hydraulics
  • Wastewater Treatment
  • Metering systems
  • Process technology
  • Biotechnology
  • Energy saving fluid transportation
  • Hydraulic pressure testing
  • Water injection
  • Drilling service
  • Water jet cutting
  • Fracking

Benefits of Plunger Pumps

Plunger pumps can be configured to be used with almost any form of fluid and substance out there that are being produced by the various industrial facilities. They are able to pump against the flow of very high-pressure rates with a high degree of possible efficiency.

Since the inception of pneumatics, it has played an important role in the performance of mechanical work. The technology has been used to develop a wide range of automation solutions. Pneumatic systems and hydraulic systems share a relatively similar design. The main difference is that the former uses compressed air instead of hydraulic fluid. 

An example of a pneumatic system is one that automatically stops the flow of a gas or liquid when it reaches a certain pressure. Most pneumatic systems require a constant supply of compressed air to operate. Air compressors are typically utilized to provide that power source. These systems suck in air from the atmosphere and then store it in a high-pressure storage tank. Also known as a receiver, the unit will release compressed air through a series of valves and pipes. 

Thanks to the environmentally friendly nature of pneumatic systems, operating them does not produce pollutants. It is, however, important to install a proper exhaust air treatment system that meets clean room standards. The speeds of oscillating and rectilinear movement of pneumatic systems do not have a lot of restrictions. What’s more, they are easy to adjust.   

Pneumatic systems are also well-known for their simplicity in design. That’s why they can be used in some automatic control systems. Technicians can operate these systems via angular rotational movement, linear movement, and various operational speeds. 

Because most pneumatic systems are built with extremely durable and reliable components, they cannot be easily damaged.

Pneumatic sewage ejectors are designed to pump industrial or municipal sewage over various heights and distances. These sewage ejector pumps are often installed in main, zonal, or local lift stations. A pneumatic sewage ejector typically comes with a tank so that it can temporarily hold fluid sewage. If the sewage exceeds a predetermined level in the tank, pressurized air will enter through a valve located inside the tank to eject the contents. 

When the tank has high fluid levels, it causes the float to ascend and move the valve to an air-input position. This allows pressurized air to enter and expel any unwanted fluid. In most cases, the valve will continue staying in the air-input position till the liquid reaches a low level. The float then descends, and the valve shifts to a vent position. This change allows for pressurized air to be released back to the atmosphere. The valve does not stop in an intermediate position because the float moves the valve between the vent and the air-input positions in one continuous step.

Because modern pneumatic sewage ejectors are fully automated, these systems do not require a technician’s constant attention and manual input. These ejectors allow for smooth pumping of municipal waste in pressure sewage systems and can do their jobs in a wide array of delivery methods and capacities. You can enjoy complete peace of mind that pneumatic sewage ejectors are designed to help business owners minimize wastage by recovering and saving air. You can also be sure that the overall energy efficiency of a pneumatic sewage ejector is substantially higher than conventional lift stations. 

In most cases, a pneumatic ejector is designed to raise sludge, wastewater, and other types of liquid via compressed air. Since the inception of automatic pneumatic sewage ejection systems, they have been proven to be extremely advantageous in locations that cannot be directly connected to main sewer lines. 

How does a Pneumatic Ejector Work?

Firstly, an inward-swinging check valve allows liquid to flow through and accumulate at the bottom of an airtight pot.

Secondly, compressed air is applied over the liquid when that airtight pot is filled up to a predetermined level. 

Thirdly, the compressed air closes the inlet valve. The pressure forces the liquid out of the pot through another check valve that swings outward, which eventually empties the pot. Alternatively, the valve may remain open until the wastewater in the tank/pot reaches a low level. In this case, the float will descend to the vent position and vent the pressurized air back to the atmosphere. 

It is important to note that some low-lying places are not easily connected to main sewer lines. This affects the wastewater disposal process, typically toward a designated treatment plant. In order to resolve this issue and effectively dispose of wastewater from all regions, one can install lift stations at strategic points. These stations can help pump the sewage into the main sewer line, which will be located at a higher elevation. 

If you want to learn more about our pneumatic ejectors, do not hesitate to contact us today. Alternatively, you may call us at (877) 338-2833 or send an email to sales@carterpump.com

A diaphragm is a pumping system that utilizes positive displacement to create pressure and move substances along. Based on this system, there are many pumps that are referred to as diaphragm pumps because they utilize this technology. Diaphragm pumps work through the action of a diaphragm (typically made of thermoplastic or Teflon) with valves on either side of the diaphragm.

How Diaphragm Pumps Work

Diaphragm pumps can work in several ways. In the first type, the diaphragm is sealed in the chamber and one side of the diaphragm is situated on the side with the fluid that needs to be pumped. When it is flexed, it raises and lowers the volume of the pump chamber leading to the flow of the fluid. To prevent reverse flow, a number of non-return valves are used.

In the second type of diaphragm pumps, the key activator of the diaphragm is an electromechanical system that moves the diaphragm. 


Diaphragm pumps are used in a variety of ways. They are very efficient in water and fluid removal so they are found in virtually all industries. Common areas of usage include chemical and oil refineries, wastewater treatment, pharmaceutical products, steel works, and more. 

Pneumatic systems are commonly used to power a wide range of tools and equipment. These systems work by using pressurized air to transfer energy and force, as well as offer a practical solution to automation. There is a wide array of advantages to using a pneumatic system, which is why it is popular in many different applications. Some of its key benefits include: 

Pneumatic systems are compatible with various types of compressed gases. This versatility makes these systems beneficial for applications where compressed natural gas is the main power source. Because pneumatic systems can be installed in working environments that have high levels of radiation and temperature, they are immune to most elements present in the surroundings. 

Since most pneumatic systems are designed to purge compressed air, these processes automatically keep the instrument clean and prevent contaminants from accumulating. As you can see, it is easy to use and maintain a pneumatic system. 

A pneumatic system is extremely practical because of its excellent transmission speed. What’s more, atmospheric air abounds, making the power source an efficient and infinite resource. 

Because pneumatic systems do not derive energy or power from electricity, they do not produce sparks that could ignite gases and cause explosions or fires. That is why factories, mining sites, and other hazardous working environments benefit from deploying pneumatic systems. 

In addition to working well in flammable environments, pneumatic systems do not overheat and burn like their electromotive counterparts when overloaded.

Plunger pumps are positive displacement pumps that feature a stationary seal with a cylindrical plunger that moves through the seal. Plunger pumps are able to work under very high pressure and this makes them ideal for applications where piston pumps would not work very well. 

How Plunger Pumps Work

Plunger pumps work by the movement of a plunger or piston that moves water or other substances through a cylindric compartment. The plunger itself can be powered through a variety of means such as electric powered, pneumatic, hydraulic or steam-powered. Through the movement of the plunger, the pump builds up pressure in the chamber which in turn forces fluid or gas through the pump.

Something to note about plunger pumps is the fact the pressure in the compartment moves the valves both at the entry and discharge points. The capacity of a typical plunger pump can be calculated by looking at the total area of the plunger, the length of each stroke, and the speed of the pump. 

Plunger pumps use seals to separate the power fluid driven by the plunger and whatever substance is being pumped. The choice of material for the plunger depends a lot on the fluid being used to drive the pump, as well as the substance that the pump is being used to drive. For example, when dealing with highly corrosive substances, ceramic is a popular choice for these plungers as it is non-reactive.

Uses of Plunger Pumps

Plunger pumps are useful in a variety of applications. They are extensively used in cleaning applications where they are able to move fluids through at high pressure. Plunger pumps are also common in oil and gas production, wastewater treatment  and urea production.

Pneumatic ejector pumps work by using highly pressurized air which pushes the wastewater out of the holding tank and into the disposal system. Typically, the pump is triggered when fluids inside the holding tank reach a certain level. This is usually done by having a floater switch that is triggered when it reaches a certain level. When the air expels the fluid, the pressurized air is then vented out into the atmosphere.

Components of a Pneumatic Ejector Pump

Pneumatic ejector pumps are among the simplest of pumps as they have very little mechanical components. This makes them ideal for a variety of uses as they are very reliable. When the pump mixes air with water, the resulting mixture becomes less dense than water (because air is not as dense as water). This is how the highly pressurized air is able to force the ‘froth’ that results from the mixture out of the holding pot. The compression of air can be manual, electric or wind-driven. 


Pneumatic ejector pumps are used in many applications. In sewer systems, such pumps are often found along the sewer line, especially in low lying areas. These ejector pumps provide the extra lift that is needed to move the wastewater along. 

A diaphragm pump makes use of two diaphragms which are flexible to respond to each other to create a temporary chamber to take in and to excrete fluids through the pump itself. The diaphragms operate as a dividing wall standing in between the liquid and the air.

The First Stroke

The two diaphragms work in parallel to one another while in connection via a shaft in the middle region where the air valve can be seen. The air valve works to get the compressed air to move toward the back of the first diaphragm for it to get away from the center. The first diaphragm creates a press stroke which moves fluid out from the pump. The air behind the second diaphragm gets forced out into the atmosphere which then causes pressure that pushes the fluid to the side where there is suction. The suction valve is now removed from its seat that enables the liquid to flow through the liquid chamber.

The Second Stroke

When the first diaphragm is under pressure, it means that its stroke end has been reached. The air movement will be swapped from the first diaphragm to the second by the air valve. The compressed air then forces the second diaphragm out from the center which results in the first diaphragm to pull in towards the center instead. The second chamber is where the discharge valve is that gets forced out whereas the first chamber is where it gets back its valve. The process ends with the stroke leading the air back to the first diaphragm and the cycle restarts.