For industrial, mining, milling, and power plants or anywhere slurry solids accumulate. These pumps agitate the media around the inlet. Since water always flows to the path of least resistance, a pump without mechanical agitation will only pump the water, leaving the solids behind to accumulate around your pump intake, and eventually starving the pump by blocking the intake. Agitator pumps deliver kinetic energy to slurry solids surrounding the pump intake, re-suspending them into a fluid state. These solids, which would have otherwise buried and starved the pump of liquid, are pulled into the pump and pushed on through the discharge keeping the intake clear and free of slurry accumulation.
The bellows pump operates on the positive displacement principle. The rotation of a motor or compressing of the bellows causes the bellows to compress for one half of the rotation, causing the pump to dispense liquid into the discharge line. During the other half of the rotation, the motion of the crank mechanism causes the bellows to expand, drawing liquid from the suction line into the bellows module. The pump uses two valves to control the flow of the liquid through the pump. Discharge pressure is maintained over the entire flow range of the pump.
Bladder pumps consist of a flexible, squeezable bladder encased in a rigid outer casing. They are low-flow pneumatic devices used for sampling applications. Bladder pumps are available in a range of sizes, materials, and capabilities. This includes including models for deep wells, narrow or obstructed casings, and small-volume pumps for low-yield wells. When low-flow pumping rates are used, these pumps consistently collect high quality, uniform samples. Bladder pumps are EPA-accepted for low-flow sampling.
Pumps feed the condensate back into a boiler for reheating and reuse. These pumps close the boiler/steam/condensate loop by returning hot condensate back to the system. This takes advantage of valuable BTUs, which would otherwise go to waste.
Borehole pumps to be installed into wells. These can either be inclined or vertical wells. A borehole pump is a fully sealed unit. It can be fully submerged or operate in an atmosphere of potentially explosive gases. Borehole pumps range in size from a few cubic meters per hour, with as little as five meters hydraulic head, to many hundreds of cubic meters per hour with hydraulic heads ranging up to several hundred meters. Borehole pumps are employed where water in a site is free draining to a single point within the site and an extraction flow rate of above a few cubic meters per hour is required.
The canned motor pump is a seal-less pump. The electric motor is encapsulated in a can that isolates the rotor and process liquid from the stator. With a canned motor pump, the inner rotor is directly connected to the pump impeller, which unitizes the pump and motor. This results in a compact pumping package.
Motor and seals are kept away from the pumped media. The pump has an elongated drive shaft and is submerged in the media. They have no submerged seals, bearings, bushings, or suction check valves. The cantilever or overhung shaft is supported by heavy-duty ball bearings that are located above the pumped liquid.
Centrifugal pumps use a rotating impeller to add velocity to the liquid being pumped. Within the pump, the velocity of the liquid is generated by centrifugal force. The velocity of the solution is converted with internal restrictions within the pump into pressure. This type of pump is used for liquids that are water like in viscosity and when quantities of flow are large compared to the pressure requirements.
Pumps that transport or collect and transport condensate collected from a steam system back into the system for reheating and reuse. These pumps close the boiler / steam / condensate loop by returning hot condensate back to the system. This takes advantage of valuable BTUs, which would otherwise go to waste.
Or pumps for removal of unwanted condensate from an HVAC or appliance collection pan.
Designed for clear water applications (agricultural, industrial, and residential). As a general rule, dewatering pumps are limited to a 10% solids concentration and a solids size of 1/4 the diameter of the suction inlet. For applications requiring greater solids handling capability, trash pumps should be used.
Diaphragm pumps are the most common industrial PD pumps. They are sometimes referred to as a membrane pump. A typical configuration consists of a single diaphragm, a chamber, and suction and discharge check valves to prevent backflow. The piston can either be directly coupled to the diaphragm or can force a hydraulic oil to drive the diaphragm. Variations include bellows-type diaphragms, hydraulically actuated double diaphragms, and air-operated, reciprocating double-diaphragms.
Dosing pumps are low-volume fluid pumps with controllable discharge rates used to inject chemical additives into the mixing or pumping system. They are frequently used to efficiently inject difficult to mix fluids into batch-tank systems because of their low volume.
Double diaphragm pumps are displacement pumps that compress fluid by decreasing the volume of a chamber containing the fluid. Two diaphragms are mechanically, hydraulically, or pneumatically oscillated to displace the liquid or gas. The chamber is divided with one side using hydraulic fluid, air, or a motorized drive to move the diaphragm. The media is pulsed through the pump without contacting the actuating media. Double diaphragm pumps are often a component in a complete fluid transfer system where a switch or valve is used to control the flow of the media continuously or on demand.
Drum pumps are designed to transport or dispense the contents of drums, pails, or tanks. Pumps are driven by a variety of methods including hand operated, electric, pneumatic, and hydraulic driven motors. Explosive environments or flammable fluids may require an intrinsically safe actuation method.
Ejector pumps are sewage handling pumps that are required when wastewater cannot flow to its destination by means of gravity at a velocity of at least 2 feet per second. There are two basic types of ejector pumps. One is the vertical suspended type where the motor is mounted on the cover of the basin, supported by its shaft connected to the pump housing inside the basin. The second type is the close-coupled submersible, where the motor is connected directly to the pump housing and impeller by a short shaft and is submerged completely inside the basin.
Flexible impeller pumps contain an elastomeric impeller that traps fluid between blades and sweeps it through the pump housing. These low-cost utility pumps are ideal for general transfer.
Pumps that are designed to supply flow to fountains. Fountains are used for esthetic purposes, as well as aeration in residential, commercial, and industrial applications.
Gear pumps are positive displacement rotary pumps used to transport high pressure and high volume flows. They function through the use of two or more internal gears that create vacuum pressure, propelling the fluid media. Gear pumps provide a comparably continuous, non-pulsating flow in relation to diaphragm pumps or peristaltic pumps. For this reason, gear pumps may be preferred in a number of applications from laboratory to petrochemical and marine applications, and processes involving hydraulic presses and dry pit steam power.
A mechanical device that shreds solids and raises sewage to a higher elevation through pressure sewers. A sewage grinder pump will discharge a finely ground slurry into a small diameter pressure pipe. In a low-pressure sewer system (LPSS) the piping downstream of the grinder pump will typically be under low pressure, 60psi or less.
Hand pumps are manually operated pumps that can be driven by hand or foot via a handle or lever. This manual external force actuates an internal mechanism, which increases pressure for moving fluids such as gas, chemicals, or water.
Hydraulic pumps deliver high-pressure fluid flow to the pump outlet. Mechanical energy sources and use gears, vanes, pistons or other devices to pressurize fluid, power hydraulic pumps. A hydraulic pump, when powered by pressurized fluid, can rotate in a reverse direction and act as a motor.
Any pump used to inject fluid into the reservoir or production system. Injection pumps vary in volume and pressure capacity, from the large injection pumps used in water-injection wells, too much smaller low-volume injection pumps used in continuous scale-inhibitor treatments.
A surface-mounted centrifugal pump that uses an "ejector” device to augment its suction capacity. The ejector may be down in the well, to assist the pump in overcoming the limitations of suction. (Some water is diverted back down the well, causing an increase in energy use.)
Magnetic drive pumps are operated using a magnetic or electromagnetic drive. They are ideally suited to a variety of applications including laboratory, production line, chemical processing, general transfer utility, as well as OEM applications.
Metering pumps are positive displacement chemical dosing devices with the ability to vary capacity manually or automatically, as process conditions require. Metering pumps feature a high level of repetitive accuracy and are capable of pumping a wide range of chemicals including acids, bases, corrosives, or viscous liquids and slurries.
Micro pumps are essential for moving fluids in miniaturized systems. The working principal of a typical micro pump involves interaction of a flexible structure with the working fluid. The flexible structure is deformed using some actuation technique (e.g., piezoelectric or electrostatic actuation) and the deformation provides a positive displacement action for moving the working fluid.
A large, reciprocating pump used to circulate the mud on a drilling rig. A typical mud pump is a double- or triple-acting, two- or three-cylinder piston pump whose pistons travel in replaceable liners and are driven by a crankshaft actuated by an engine. A mud pump also is called a slush pump.
Peristaltic pumps are rotary pumps using a turning mechanism to move media through a tube. The tube is compressed at a number of points in contact with the rollers or shoes. The media is moved through the tube with each rotating motion. The individual components of peristaltic pumps include a pump head, drive, and tubing. Peristaltic pumps are also referred to as flexible member pumps, flexible tube pumps, dispensing pumps, or dosing pumps.
Designated by manufacturer as being applicable to the petrochemical industry. The petroleum and chemical industry is the petroleum refining using petroleum and natural gas as raw material. The petroleum refining industry is the industry producing large quantities of gasoline, kerosene, diesel oil, lubricating oil, paraffin wax, asphalt, chemical raw material, petroleum solvent and the like through processing crude oil. Petroleum chemical industry is the industry that produces all kinds of chemical products and compound materials using petroleum and natural gas as raw material through chemical processing.
Piston pumps and plunger pumps are reciprocating pumps using a plunger or piston to move the media through a cylindrical chamber. They use steam power drives, pneumatic drives, hydraulic drives, or electric drives to actuate the piston or plunger. Some piston pumps and plunger pumps are also referred to as well service or high viscosity pumps.
Positive displacement pumps use a mechanical force to push liquid through and out of the pump. Rotating gears, reciprocating pistons or diaphragms are the most common types of positive displacement pumps. These pumps are suitable for higher viscosity liquids or when pressure requirements are high.
Progressing cavity pumps are a type of rotary positive displacement pump designed to transfer fluid or media with suspended solids or slurries from the suction side of the pump to the discharge side of the pump from storage tanks or through pipelines. Advantages of progressing cavity pumps include moving viscous media at lower velocities.
Propeller pumps are generally high-speed but with low heads. They can be quite large, measuring over twelve feet in diameter and moving over 50,000 gallons per minute. Some have adjustable-pitch blades. Propeller pumps are designed for pumping large volumes at low head.
Hydraulic ram pumps use the energy of a large amounts of water falling a small height to lift a small amount of that water to a much greater height. In this way, water from a spring or stream in a valley can be pumped to a village or irrigation scheme on the hillside. In general, a ram pump can pump approximately one tenth of the received water volume to a height ten times greater than the intake. A hydraulic ram pump is useful where the water source flows constantly and the usable fall from the water source to the pump location is at least 3 ft.
Reciprocating pumps move liquids by a plunger or piston that travels back and forth inside a cylinder. Regulating the speed of the drive controls flow. There is no head loss by throttling as in a centrifugal pump. These pumps are often used for high or very high pressures. Also often used as metering pumps because of constancy of flow rate. Adjusting the RPM of the driver can easily change the flow rate.
Rotary lobe pumps are positive displacement pumps that use rotating lobes to direct flow. Lobe pumps are similar to gear pumps in operation in that fluid flows around the interior of the casing. Rotary lobe pumps are frequently used in food applications because they can process solids without damaging the product. Since the lobes do not contact each other, these pumps can handle products of a larger particle size and are ideal for pushing through low viscosity media.
Sanitary pumps are made of materials and constructed in design so that they are readily cleanable. They are widely used in the dairy, food processing, pharmaceutical, cosmetic, and other industries where cleanliness is a concern.
Siphon pumps are typically manually operated and self powered once begun. The pump is used to begin the flow of fluid. Flow and gravity then draw fluid from one container to another.
Split case pumps are larger pumps that are used for high flow applications. "Split case" describes the pump housing design. The case around the impeller or pumping mechanism is comprised of two parts that bolt or assemble together. These pumps come in vertical and horizontal configurations.
These pumps are mounted in the tank with the solution. The motor is normally contained in an oil filled cavity that is protected for contact with the liquid by a lip or mechanical seal. They can be designed to pump large solids or grind solids to smaller sizes, transfer wastewater at large flow rates or high pressures, or just pick up water off the floor or the bottom of a tank.
A sump pump is an automatic water pump installed in a contained compartment to remove unwanted water build-up that threatens to encroach on living or equipment space.
Infusion or withdrawal syringe pumps provide high pressure and high accuracy for applications such as high performance liquid chromatography (HPLC). Used to deliver precise amounts of fluid at specific time intervals
A positive-displacement reciprocating pump that is configured with three plungers. Triplex pumps are the most common configuration of pump used in both drilling and well service operations. Pumps used in well service activities generally are capable of handling a wide range of fluid types, including corrosive fluids, abrasive fluids and slurries containing relatively large particulates.
A centrifugal pump uses diffuser vanes to transform the velocity head into pressure head. These pumps have one or more stages, each consisting of an impeller on a vertical shaft, surrounded by stationary and usually symmetrical guide vanes. Combines the energy-imparting characteristics of axial-flow and propeller pumps.
With a vortex pump, flow through the unit is produced not by the actual impeller, but rather by a rotating vortex created by the impeller. Because the pumping action is created by the vortex, particles in the liquid do not come in contact with the impeller itself.
These units typically operate at 10,000 to 40,000 psi and are used in surface preparation; internal cleaning of pipes and heat exchangers, concrete removal (hydrodemolition); and as a cutting alternative to saw blades and laser cutting machines for parts fabrication.
A submersible or deep well jet pump used to force water upward from a pumping element below the water level. Not restricted by suction lift limitations.
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Concrete is a building material created by combining a mineral (which is usually sand, gravel, or crushed stone) a binding agent (natural or synthetic cement), chemical additives, and water.
Any of many mineral, vegetable, and synthetic substances and animal and vegetable fats that are generally slippery, combustible, viscous, liquid or liquefiable at room temperatures, soluble in various organic solvents such as ether but not in water, and used in a great variety of products, especially lubricants and fuels.
Water that is considered safe and fit for human consumption, culinary and domestic purposes and meets the requirements of the health authority having jurisdiction.
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Designated by manufacturer as being applicable and built to military specifications. Covers aircraft, the military, equipment and supplies, as well as space, aerospace, medical and more.
Designated by manufacturer as being applicable to the agricultural or horticultural industry. Establishments primarily engaged in the cultivation of soil and crops and the raising of livestock.
Designated by manufacturer as being applicable to the automotive industry. Includes vehicle and parts manufacturers, dealers and aftermarket services in the automotive sector.
Designated by manufacturer as being applicable to the pharmaceutical and biotechnology industries. Producers of organic and inorganic medicinal substances for human or veterinary use.
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A bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation.
Brass comes with good strength, excellent high temperature ductility and reasonable cold ductility, good conductivity, excellent corrosion resistance, good bearing properties and low magnetic permeability. Sintered bronze is a porous material, which can be impregnated with oil, graphite or PTFE. Not suitable for heavily loaded applications but useful where lubrication is inconvenient.
The term "cast iron" refers not to a single material, but to a family of materials whose major constituent is iron, with important trace amounts of carbon and silicon. Cast irons are natural composite materials whose properties are determined by their microstructures - the stable and metastable phases formed during solidification or subsequent heat treatment. The major microstructural constituents of cast irons are: the chemical and morphological forms taken by carbon, and the continuous metal matrix in which the carbon and/or carbide are dispersed.
Any of various organic compounds produced by polymerization, capable of being molded, extruded, cast into various shapes and films, or drawn into filaments used as textile fibers.
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Explosion proof pumps are designed to prevent internal or external explosions by enclosing parts that could cause ignition of the transfer media or the surrounding atmosphere. Additionally, they are designed to prevent internal explosions from affecting the surrounding atmosphere and vice versa.
The pump has an integral grinding mechanism in the suction port to grind garbage, sewage, rubber goods, plastic bags, fabrics, etc., to very small pieces and transfer them under pressure.
Compressed fluid goes from initial stage to successive chambers or stages of pressurization; used to generate higher-pressure levels than are possible with single stage pumping.
The pump is specifically designed to meet the strict guidelines established for sanitary process applications. Classifications and ratings may include FDA, USDA, and 3-A.
Priming is the introduction of fluid into the pumping chamber to create the pressure differential to begin pumping at rated service. Self-priming pumps are constructed so that they can create and maintain a sufficient vacuum level to draw fluid into the inlet with no external assistance.
Washdown duty pumps are designed to perform better in wet environments including food processing plants and dairies as well as other high humidity areas.
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