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The Versatility of a Hydraulic Pump

The primary purpose of a hydraulic pump is to pressurize hydraulic fluid in order to operate machinery. This can be anything from farm equipment to aircraft parts. A hydraulic pump can either send fresh fluid through it, known as an open loop system or used fluid which would be known as a closed loop system. Each have their own operational purposes depending on the application or the job that is required to be done.

Although there are a variety of hydraulic pumps available for just about any industrial operation, below are two distinct types of pumps.

Fixed Displacement Hydraulic Pump

More limited to its applications then other hydraulic pumps, this less expensive and simplistic pump maintains a set flow of fluid through the pump. The most basic being a gear pump which sends the pressurized fluid through a set of gears and through the outlet running the basics of machines. Using a set of Archimedes spirals instead of gears, the fluid picks up good pressure as it flows through rotating screws. This allows for a higher flow rate of fluid at a low pressure.

Variable Displacement Hydraulic Pump

Being able to control the rate of flow and the outlet pressure allows this pump to offer a variable drive. It also makes them a little more complex and expensive due to this capability.

Other Higher Efficiency Pumps

Best suited for middle range pressure are the rotary vane hydraulic pumps. Here, pressure is increased from the use of concentric, offset vanes. This is where the working fluid is forced into smaller volumes increasing that pressure. The bent-axis piston and cylinder designed hydraulic pump is most likely the best when it comes to efficiency and output. Built similar to that of a vehicles piston and cylinder engine, it can run at high pressure while maintaining the desired efficiency. Using two cylinders per piston, the double action design of this pump can certainly up the throughput.

Hydraulic pumps are such a versatile piece of equipment. They are available in a large variety of designs for just about every budget and application. Many models can even be paired up to increase output if necessary. With a hydraulic pump, there is no doubt you will get the job done.


The Many Uses of a Pneumatic Valve Actuator

Pneumatic valve actuators are found in countless industrial settings all over the world. There are various types of construction applications, oil and chemical plant, deep water and water management facilities that put these tools to use. These pneumatic valves are typically used for the delivery and control of liquids and compressed air through complex piping systems.

Made From a Variety of Materials

Depending on the particular application, pneumatic valves can be manufactured from plastics, aluminum or stainless steel. Stainless steel pneumatic valves for example, are typically found in oil or chemical plants where the flow of liquids and corrosive fluids are the primary product moving through their pipes.

Other Common Uses of Pneumatic Valves

Precise pneumatic valves such as turtorq actuators are used to regulate a required amount of compressed air. These types of systems are typically operated from remote locations for safety reasons. Usually away from the hazardous chemicals and liquids are flowing. With safety in mind in chemical plants, butterfly valves are sometimes used right inside the pneumatic valve or as a separate system altogether. It should be noted that if used separate, these systems would be placed along the same section of pipe when working in a hazardous liquid or chemical plant. Installing sensors in the pneumatic valve actuators can also monitor the flow of liquids.

Higher Benefits

Unlike hydraulic actuators, pneumatic valves have the capability to store energy so they can be used in emergency situations such as power interruptions. They can also work under larger energy payloads. Although these systems do not do very well in sub-zero temperatures, there are varieties of pneumatic valves that deliver compression using heated air. These systems will not compromise the performance of the valve. It’s always nice to know that fluid delivery system in cold weather locations use some sort of back up in order to minimize any unscheduled down time.

A Reliable System

It is very important that any liquid or fluid directional flow system, especially those that move potentially hazardous material, have some sort of fail-safe system. The ability to override and regain control of a system from a remote location in the event of an emergency is just what a pneumatic valve actuator is capable of.