Purchasing Surplus Pumps and Machinery

Many industrial businesses use pumps in manufacturing. Municipalities use pumps as well in public water lines, sewage treatment and so on. The cost of industrial pumps can eventually run very high. For this reason many choose to use surplus pumps. Buying surplus pumps and machinery can easily reduce the cost to your overall bottom line because many times you can get working and low use pumps at a great value, often saving thousands on buying the same model brand new.

Industrial surplus pump dealers pull from various sources such as plant shut downs, canceled projects, manufacturers overstock, and a long list of contacts that all sell their unsold stock or unused equipment to make space for newer inventory. Surplus pumps and industrial machinery isn’t always out-of-date or no longer functioning.

Many times surplus pumps are still in great condition. In fact surplus you may purchase from an industrial machinery dealer comes in many conditions. Be sure that a surplus dealer makes it clear what kind of condition each and every pump comes in. Surplus can be new (but without a manufacture’s warranty), unused new stock, old or no longer manufactured, used lightly, rebuilt, or pumps that were used but still have plenty of use-life remaining.

Often times purchasers may be hesitant to consider surplus pumps and machinery because there is a stigma that may lead them to think that a surplus pump is prone to break down or continual maintenance but surplus industrial machinery can often times work just as well as newly produced pumps and machinery.

When considering a surplus pump dealer you’ll want to be sure that the dealer has a far reaching background in the use of industrial pumps and knows the industry well. They should be able to keep their costs to a minimum to ensure you can get maximum value for your dollar. Ask them if they have fabrication, rebuild or repair facilities as often this is a good indication of their knowledge and expertise in the industry as well as being able to repair a pump that has seen a lot of use. Many times you can get a good deal on an older pump and have them rebuild it.

A surplus pump dealer should also have the ability to purchase new or aftermarket OEM parts, motors, etc. When contacting them ask them if they have a fax-back form for quote estimates on parts and repair. This way you know what the cost is beforehand. A good surplus dealer should always be willing to work with you on the price and like any good salesman be willing to negotiate and win your business over. Be sure they have a friendly demeanor.


Centrifugal Pumps

Centrifugal pumps have great application in industrial and residential properties for pumping water. They are machines that move liquids with the help of kinetic energy stored in the motor. Though, the main function of using these pumps is to move water, but they are also used in sewage, petroleum and chemical industries. These are machines that cause liquid to flow and have become very popular down the years. Its popularity is mainly because of the comparatively recent development of high speed electric motors, steam turbines, and internal combustion engines. They are mostly used as an industrial pump because of the conversion of the motor to rotational energy. Centrifugal pump has a very simple construction and gives a steady delivery of liquid. There is a complete absence of valves in this machine. It can very easily handle liquids that have high proportions of suspended solids in them.

What are self priming centrifugal pumps?

Self priming centrifugal pumps are pumps that free itself of air when it becomes air-bound and will continue pumping without attention. These pumps work better when volatile liquid is used in chemical processes. They function to transfer vapor from the suction side of the impeller to the discharge. When this is done in a long run, a vacuum is created in the suction line and the atmospheric pressure on the surface of the liquid pushes the liquid into the pump. Mainly two schemes are used to achieve vapor transfer. One is recirculation priming and the other is diffuser priming.

Basic information on recirculation and diffuser priming

Recirculation priming of self priming centrifugal pumps uses a check valve between the suction passage and the liquid reservoir on the pump discharge. When there is air in the passage, the valve opens and the liquid from the reservoir recirculates back through the impeller, taking a few air bubbles along on each trip. This helps in exhausting the air in the suction line. This allows the liquid to fill in the suction line and the closing of the check valve.

On the other hand, diffuser priming is developed to avoid the check valve or any other problem that arises in recirculation priming. This type of priming machine is considered more efficient and is most widely used these days. In this process, the liquid does not return back from the reservoir but combines with the air at the circumference of the impeller.

Tips to use self priming centrifugal pumps

Self priming machines require an initial fill of liquid. They need something to recirculate. While using these pumps, you must prevent excessive back pressure on the discharge of the pump. If in case, there is a problem, you can get out of this by placing an air release valve in the discharge line between the pump and the check valve. This will help in letting the air escape. While buying this pump, prefer buying one that has a mechanical shaft seal. Air leaking in through the stunning box makes priming difficult. Ensure that there is no leak in the suction line as it will reduce or eliminate the pump’s self priming capability. If you follow all these tips, your pumps will keep on providing good function for years to come.

Look for a good centrifugal pump

If you want that the pump should offer you good services for a long time, you must prefer buying a good pump. A good quality pump will have superior components and will withstand the test of time. So, be sensible to buy pumps that will offer you good services for a long time.


Pressure Sensors – Type on Technology Used in Many Industries

The pressure sensor is an industrial tool that is produced to measure the pressure of a gas or liquid. This tool acts as a transducer that converts energy into other forms so that it can be translated into observable values. The pressure sensor is designed to be able to generate optical, electrical, and visual signals using pressure as a data source.

Almost all industries use pressure sensors to measure several variables such as gas flow, fluid flow, water velocity, water level, etc. Because of its many benefits, this tool is considered relevant to be applied in all industrial fields. How to get it is also very easy, you only need to visit Strainsense to get products according to industry needs.

The use of the pressure sensor depends on where it will be used. You also need to take into account the cost of the product, the type of pressure, and the type of technology used. There are several types of pressure sensors based on the type of pressure and the various technologies used. The first is an absolute pressure sensor to perform pressure under conditions of perfect vacuum pressure. Second, the gauge pressure sensor is capable of adapting to atmospheric pressure in different locations.

Third, a vacuum pressure sensor capable of measuring pressure below atmospheric pressure. Fourth, the differential pressure sensor. And the fifth is a closed pressure sensor. Closed pressure sensors are used to calculate sea level pressure. And lastly the differential pressure sensors are used to obtain pressurized flow in the vessel as well as to measure whether there is a decrease or increase in two or more pressure systems.

Pressure sensors are used in differential pressure measurement methods in shipping and instrumentation industrial applications. The measurement of differential pressure becomes the material for other measurements such as the measurement of flow, altitude, density, viscosity, even for the measurement of temperature.

Pressure sensor technology plays a role in the development of industry and technology to date. There are many new technologies that adapt the performance of pressure sensors. They are pressure sensors on planes, cars and other engine pressure. Other technologies that make up pressure sensors are strain gauges, piezoresistive semiconductors, microelectromechanical systems, vibrating elements, and vibrating capacitances.