Author Archives: sachin

  1. Why Use Skid Systems for Your Processes?

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    Skid systems are process systems that consist of all of the components necessary for a process mounted to a frame. In addition to being used as standalone units, they can be combined to form more complex systems for larger processing operations. Some of the applications for which they are regularly employed include renewable natural gas, compressed air, pump, and environmental protection operations.

    The following article outlines the benefits of using a skid system for industrial applications and processes.

    Advantages of Skid Systems

    Compared to traditional equipment installations, skid systems offer a number of advantages, including:

    • Broader customizability. The layout of a skid system can be tailored to accommodate the setup of the facility. By keeping intuitive design practices in mind, system designers can reduce the risk of operator issues arising during operations.
    • Greater equipment protection. The design of skid systems makes them easy to move. This quality is highly advantageous in the event of leaks, spills, and other system issues as the unit can be easily and quickly removed to allow for cleanup or repair operations, reducing the risk of the system experiencing further damage or degradation.
    • Lower long-term costs. A single skid system can be used to replace multiple processing units. As a result, facility owners and managers can significantly lower their equipment investment costs. Additionally, when designed properly, it can reduce operational costs with regard to energy utilization and waste generation.
    • Easier system maintenance. The modular design of skid systems makes it easy for repair and maintenance personnel to identify and evaluate individual parts, resulting in faster diagnostic, repair, and replacement operations.
    • Better space efficiency. Modular skid systems generally require less space than individually installed equipment, making them easier to move and install to suit the current needs of the facility.
    • Higher reliability. Partnering with an experienced solutions provider to design and build a skid system ensures the unit will work as intended with little to no troubleshooting or downtime needed upon delivery.

    Contact the Glauber Experts for Your Custom Skid System Needs

    The broad customizability, equipment protection properties, low long-term costs, easy system maintenance requirements, small footprints, and excellent reliability of skid systems make them well-suited for use in a wide range of industrial processing applications. If you need a custom skid system for your facility, turn to the experts at GEC.

    At Glauber Equipment Corporation, we’ve designed and built custom skid systems for over 60 years. This experience, combined with our highly trained technicians and mechanics and state-of-the-art facilities, allows us to provide solutions for even highly specific or unique requirements.

    To discuss your application requirements with one of our experts, request a quote today.

  2. All About Positive Displacement Pumps

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    What Is a Positive Displacement Pump?

    Positive displacement pumps (PDPs) are one of the most commonly used types of pumps. As suggested by the name, they rely on displacement mechanisms to move fluids. Unlike other types of pumps, these pumps offer the same flow capacities at a given speed regardless of inlet or discharge pressure. Additionally, they are more suitable for use in applications with demanding or specialized requirements, such as pumping liquids with high viscosities or suspended solids.

    The following article provides an overview of positive displacement pumps, outlining the types available, key advantages, typical applications, and important selection considerations.

    Types of Positive Displacement Pumps

    Positive displacement pumps can be categorized into three main classifications:

    • Rotary pumps. These pumps utilize rotating components to move fluid into and out of the pump chamber. Examples include gear pumps, lobe pumps, and screw pumps.
    • Reciprocating pumps. These pumps employ a reciprocating mechanism to pull fluid into the cavity through an inlet valve, then expel it through the outlet. Examples include diaphragm, piston, and plunger pumps.
    • Linear pumps. These pumps use a linear mechanism to displace fluids along a straight path. Examples include chain pumps and rope pumps.

    Advantages of Positive Displacement Pumps

    Compared to other types of pumps, positive displacement pumps offer a number of advantages. One of their primary benefits is their consistent flow rates. This quality makes them well-suited for pumping applications involving high-viscosity fluids, such as creams, oils, grease, slurries, and suspensions. They are also better able to accommodate high pressures and low flow rates.

    Applications of Positive Displacement Pumps

    Positive displacement pumps are used in a wide range of industries for a variety of applications and processes. Below we outline some of the typical uses of the types available.

    • Rotary pumps. Gear pumps are used for pumping high-viscosity fluids in the chemical and petrochemical and food and beverage processing industries. Lobe pumps are employed in biotechnology, chemical, food and beverage, pharmaceutical, and other industries with high sanitation standards. Screw pumps are utilized for fuel transfer and injection, irrigation, and oil processing and production applications.
    • Reciprocating pumps. Diaphragm pumps are used for metering and dispensing, cleaning, spraying, and water treatment operations. Piston and plunger pumps are employed for high-pressure washing and other applications involving low-viscosity fluids.
    • Linear pumps. Chain and rope pumps are utilized in wells to pump water from the ground to the surface.

    Selection Considerations for Positive Displacement Pumps

    Positive displacement pumps are used throughout the industrial sector to force fluids into, out of, and between different processing and production equipment. When selecting a positive displacement pump, some of the key considerations to keep in mind to ensure it operates effectively and efficiently in the application environment include:

    • Flow rate requirements
    • Pressure requirements
    • Power requirements
    • Efficiency requirements

    High-Quality Positive Displacement Pumps at Glauber Equipment

    At Glauber Equipment, we carry a broad selection of positive displacement pumps from reputable manufacturers to suit the various pumping needs of our customers. Our pump offerings include:

    • From Wilden: air-operated diaphragm pumps for the chemical, food, pharmaceutical, and wastewater industries
    • From Enviro Gear: gear pumps for the asphalt, coating, and paint markets
    • From Mouvex: eccentric disc pumps for the chemical, food, refined fuel, and other sanitary industries
    • From PCM: progressive cavity pumps for the chemical, environmental, food, personal care, and pulp and paper industries
    • From Almatec: air-operated, diaphragm solid block pumps for the ceramic, chemical, paper, and semiconductor markets
    • From Tuthill: gear pumps for the agriculture, chemical, construction, and food and beverage industries
    • From Neptune: chemical feed and injection-type pumps for the food and beverage, general, oil and gas, and wastewater industries
    • From Verder/Alpha Laval: sanitary lobe pumps for the chemical, food and beverage, pharmaceutical, and wastewater markets
    • From Vogelsang: rubber-lined lobe, shredder, macerator, and hopper-feed pumps for the biogas, chemical, food, pulp and paper, and wastewater markets
    • From General Pump: high-pressure piston pumps for general industry use

    To learn more about our positive displacement pumps or discuss your application requirements with one of our experts, contact us or request a quote today.

  3. What Is a Centrifugal Pump?

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    A centrifugal pump is a machine that uses rotation to impart velocity to a liquid, resulting in fluid flow, by converting rotational kinetic energy into hydrodynamic flow energy. It is the most common type of pump used in industrial processes and household purposes. Centrifugal pumps are made up of multiple components that work together, creating a device that is used in a variety of applications.

    What Components Make Up a Centrifugal Pump?

    There are several components that make up a centrifugal pump, including:

    • Impeller. The impeller rotates at high speeds to impart velocity to a liquid.
    • Casing. The casing serves as a pressure containment vessel and directs the flow of liquid in and out of the centrifugal pump.
    • Pump Shaft and Shaft Sleeves. The impeller is mounted on a pump shaft, usually made of steel or stainless steel, which transmits torque from the motor to the impeller. A protective metal shaft sleeve is threaded or slid onto the portion of the shaft inside the sealing arrangement to hold the impeller in place.
    • Bearing. Bearings are designed to constrain motion and reduce friction between the shaft and the stator.
    • Rotational Mechanics (Pumping Unit). The pumping unit is crucial to the functionality of a centrifugal pump and typically contains two parts: a pump and a driver. The driver, which is usually an electric motor, imparts rotational power to the pump.

    Common Applications of Centrifugal Pumps

    Centrifugal pumps are used in a variety of industries, including agriculture, dairy, food-processing, mining, chemical plants, pharmaceutical, municipal water plants, oil refineries, and more.

    These industries use centrifugal pumps for the following applications:

    • To supply water for daily use
    • To pump water for domestic use
    • To boost pressure when pumping liquids
    • To provide sump drainage in sewage applications
    • To regulate boiler water
    • To assist in fire protection systems

    Centrifugal Pumps from Glauber Equipment

    Glauber Equipment Corporation has nearly six decades of extensive experience in the field of fluid and air flow mechanics. We design and build custom fabricated pump systems, Skid systems, landfill gas treatment systems, compressed air systems, and more. Our mission is to provide superior products that are suited to the specific needs of our customers.

    Glauber Equipment’s team of experts uses high-quality equipment in our spacious facility to provide both on-site and depot repair services. Our repair vans are available 24/7 to assist our customers with any emergencies.

    Some of the centrifugal pumps that we carry include:

    • Carver
    • Griswold
    • Fybroc
    • Vertiflo
    • Barmesa
    • Cornell
    • National Pump Company
    • Crane
    • Iwaki
    • MTH
    • Dickow
    • Verder

    If you are on the lookout for centrifugal pumps, our expert technicians are here to help point you in the right direction and assist with installation and repairs. Browse our centrifugal pumps to find your next solution today.

  4. Everything You Need to Know About Positive Displacement Pumps

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    Positive displacement pumps play a critical role in fluid handling and processing applications across a wide range of industries. While centrifugal pumps have replaced them as the standard for low-pressure, high-volume pumping operations, they remain necessary for highly specialized pumping applications. The following article provides an overview of positive displacement pumps, outlining what they are, how they work, and the types available in the market.

    What Is a Positive Displacement Pump?

    Positive displacement pumps rely on a variety of rotating or reciprocating components—e.g., diaphragms, gears, pistons, rollers, or screws—to draw in fluid into the pump chamber on the suction side and push fluid out of the pump chamber on the discharge side. The suction side has an expanding cavity while the discharge side has a decreasing cavity. This design allows the pump to generate the high pressures needed to move materials with high-viscosities and/or in precise volumes.

    How Does a Positive Displacement Pump Work?

    Positive displacement pumps rely on the principle of fluid displacement to move fluid from the inlet to the outlet. During each cycle of operation, the rotating or reciprocating component forces a fixed amount of fluid into the expanding cavity and out of the decreasing cavity. The amount of fluid displaced depends on the displacement mechanism employed. The rate of flow will remain constant, regardless of the discharge pressure.

    Unlike centrifugal pumps, positive displacement pumps do not have shut-off heads. As a result, they cannot be operated against closed valves on the discharge side. Otherwise, the pump will continue to discharge fluid until the pressure in the discharge line is sufficient enough to damage the line and/or the pump. For this reason, industry professionals often add an internal or external safety or relief valve to the discharge side of positive displacement pumps as a preventative measure.

    Types of Positive Displacement Pumps

    There are two main classifications of positive displacement pumps: reciprocating pumps and rotary pumps.

    Reciprocating Positive Displacement Pumps

    Reciprocating pumps rely on components that perform a repetitive linear motion—i.e., up-and-down or back-and-forth—to create the pressure that draws fluid into and pushes fluid out of the pump chamber. Examples of reciprocating pump components include plungers, pistons, and diaphragms. For pumps with pistons or plungers, the suction stroke of the component opens the inlet valve and closes the outlet valve, allowing fluid to enter the pump chamber. The forward stroke of the component closes the inlet valve and opens the outlet valve, allowing fluid to exit the pump chamber. For pumps with diaphragms, the flexible membrane expands and compresses to draw the liquid in and discharge it.

    Rotary Positive Displacement Pumps

    Rotary pumps utilize components that perform a rotating motion to draw in and push out fluid. Examples of rotary components include gear and screws. The element develops a liquid seal with the pump casing. As a result, it creates suction as it rotates, which pulls fluid into the pump chamber at the suction point and pushes fluid out of the pump chamber at the discharge point.

    To learn more about reciprocating and rotary pumps, check out this article. [LINK TO ARTICLE]

    Contact the Pump Experts at Glauber Equipment Corporation Today

    At Glauber Equipment Corporation, we’ve provided high-quality fluid handling solutions for over 60 years. One of our core product offerings is positive displacement pumps. We maintain a broad selection of equipment from a variety of manufacturers to accommodate the different pumping requirements of our customers. Our experts are available to help identify the best solution for every pumping application.

    For additional information about our positive displacement pumps, check out our product page. To get started on your next positive displacement pump solution, contact us or request a quote today.

  5. Four Types of Positive Displacement Pumps

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    There are numerous types of positive displacement pumps and understanding how they work is crucial to success. Below, Glauber Equipment provides information on common types of pumps to help readers understand the differences and choose the best type for their intended application.

    Diaphragm Pumps

    Diaphragm pumps, also known as membrane or air operated diaphragm pumps, are positive displacement pumps that use the combination of a thermoplastic, rubber, or PTFE diaphragm and suitable valves to pump a fluid. When operated at a given speed, their rate of flow does not vary significantly with discharge or pressure.

    Diaphragm pumps can transfer a wide variety of liquids, including chemicals, with various viscosities and high solid contents. Their design allows them to be constructed with numerous body materials and diaphragms, enabling them to handle aggressive chemicals such as acids. Diaphragm pumps are used primarily in continuous applications such as general plants, industrial, and mining applications.

    Gear Pumps

    Gear pumps are a type of positive displacement pump that uses two or more gears to create a vacuum that drives the liquid through the pump, forcing a constant amount of fluid with each revolution. Gear pumps don’t contain any valves and are capable of operating under high forces, making them most suitable for efficiently pumping thick liquids such as oils, paints, and solvents.

    Lobe Pumps

    Similar to gear pumps, lobe pumps operate with the counter-rotation of two lobes moving fluid through the interior of a chamber. The shaft-mounted lobes are turned with an external gearbox used to transfer energy.

    The gearbox has timing gears which enable synchronized rotation to keep the lobes from contacting and create the pressure change required to induce fluid movement. As the energy from the drive shaft is transferred to the lobes, the pressure inside the chamber decreases, causing the fluid to flow.

    Lobe pumps are highly efficient, reliable, rust-resistant, and hygienic, making them suitable for various applications, including chemical, pulp and paper, food, beverage, biotechnology, and pharmaceutical.

    Piston Pumps

    Piston pumps are positive displacement pumps that use a piston, diaphragm, or plunger to move fluids by creating a high force seal. The piston is typically attached to a shaft that is connected to a rotary component. As the rotary component turns, it transfers energy to the shaft, which operates the piston and displaces the fluid.

    There are many types of piston pumps, all featuring at least one piston or plunger used to displace fluid. Piston pumps are used as hydraulic pumps for powering heavy equipment and are also used in many smaller machines, such as paint sprayers. They are capable of operating under a wide range of pressures and are good with thick liquids, slurries, and abrasives, making them suitable for various industrial applications such as water irrigation, housing, commercial buildings, fire pumps, sprinkler systems, and more.

    Glauber Equipment for Your Positive Displacement Pump Needs

    At Glauber Equipment Corporation, we specialize in providing solutions for all your fluid and airflow needs. We have designed and built custom pump systems for a wide range of industries since 1960, and we consult with each client to determine their exact needs. Our staff of highly skilled and trained technicians and mechanics are committed to delivering outstanding value, products, and customer service. To learn more about our positive displacement pumps, browse our selection today.

  6. Differences Between Centrifugal and Positive Displacement Pumps

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    Pumps are mechanical devices vital to facilitating the movement of fluid. Variances in performance, ability to manage fluid viscosity, efficiency, and more mean there is no one-size-fits-all pump for every application. There are two main classes of pumps—centrifugal and positive displacement—and having a clear understanding of the differences between them is crucial when selecting the appropriate pump for the job at hand.

    What Is a Centrifugal Pump?

    centrifugal pump is a mechanical device responsible for moving fluid by the use of centrifugal force. They contain three primary components:

    • Impeller:Hydraulic rotor containing a series of curved vanes whose motion accelerates fluid.
    • Casing:Mechanical component surrounding the impeller that collects fluid and controls discharge pressure.
    • Rotational mechanics:Elements (like the shaft and motor) that rotate the impeller in its casing.

    Centrifugal pumps work as mechanical energy applied to the impeller imparts a centrifugal force on the surrounding water, pushing it outward radially. These high-velocity particles are captured in the casing and converted into a controlled and stable flow before being directed toward the discharge point. As the velocity of the liquid decreases inside the casing, kinetic energy is converted into pressure, helping to overcome the resistance of the pumping system.

    What Is a Positive Displacement Pump?

    Positive displacement pumps move fluid by trapping fixed volumes and displacing them mechanically. There are two main categories of positive displacement pumps:

    • Reciprocating:Repetitive strokes of pistons, plungers, or diaphragms create discharge pulses in measured amounts.
    • Rotary:Rotating cogs or gears create a seal that allows liquid to be carried from inlet to discharge.

    Both types work using variable-volume cavities to apply suction and compression to control fluid pressure as it moves through the system.

    Difference Between Centrifugal Pumps and Positive Displacement Pumps

    Both styles of pumps move fluid, yet they operate in distinct ways.  Below are some key differences between these pumps.

    Performance (Flow)

    The flow rate of a fluid is its volume passing through a given area in a unit of time. Both pumps can regulate flow by changing the speed of moving water, though they do so utilizing different mechanisms. The flow rate in a centrifugal pump is highly susceptible to the impacts of pressure. One of the main benefits of using a positive displacement pump is its ability to produce a consistent flow rate due to its fixed volume displacement.


    Viscosity refers to the friction between the molecules in a fluid and is responsible for determining the energy that will be required to make the fluid flow. Centrifugal pumps transfer fluids with relatively low viscosity, like water or thin oils. Because these pumps have variable flow rates, increased viscosity of the fluid will cause a radical decrease in the efficiency of the pump. Although flow rates remain more consistent in positive displacement pumps, viscous fluids fill chambers more quickly to improve volumetric efficiency.


    Centrifugal pumps are most effective within 80-110% of their best efficiency point (BEP) or the flow at which the pump performs most optimally based on its intended application. In contrast, the efficiency of positive displacement pumps improves as pressure increases.

    Common Applications

    Centrifugal pumps can handle large volumes of fluid, produce higher flow rates, and throttle those rates over a broader range. These characteristics position them as the ideal option for applications including:

    • Agriculture
    • Industrial production
    • Municipal power generation
    • Petroleum

    Positive displacement pumps excel in applications dealing with high pressure and high viscosity and requiring consistent performance. They are often used for:

    • Chemical injection
    • Oil production
    • Paint spraying
    • High force washing

    The Pump Experts at Glauber Equipment

    With more than 60 years of experience designing and fabricating custom pump systems, our team can find a solution to any pump, fluid, or airflow question you may have.

    For more information on how to select the proper pump configuration for your application, download our eBook, “Positive Displacement vs. Centrifugal Pumps,” or contact us today.