Positive Displacement Pumps Specifications

Market Segment



	Your choices are...
	General Industrial		Pump is for general use and not designed around a specific application or industry.
	Commercial		Pump constructed for use in the commercial or service orientated industry.
	Construction		Designated by manufacturer as being applicable to needs within the construction industry.
	Maritime		Designated by manufacturer as being applicable to the maritime or marine industry.
	OEM Supply		Designated by manufacturer as being applicable to supplying components as an OEM supplier.
	Municipal		Designated by manufacturer as being applicable to use by municipal agencies.
	Mining		Designated by manufacturer as being applicable to the mining industry.
	Petrochemical / Hydrocarbon 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.
	Pulp and Paper		Designated by manufacturer as being applicable to the pulp and paper industry.
	Power Generation		Designated by manufacturer as being applicable to the power generation industry.
	Other		Other unlisted or specialized industry or market segment.
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Pump Type



	Your choices are...
	Water Jetting Pumps		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.
	Bladder Pumps		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.
	Booster Pumps		A pump used to increase pressure in a pressure line, or to pull from a storage tank and pressurize a system.
	Diaphragm Pumps		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.
	Double Diaphragm Pumps		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.
	Grinder Pumps		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		Hand pumps are manually operated pumps that can 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.
	Gear Pumps		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.
	Piston / Plunger Pumps		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.
	Peristaltic Pumps		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.
	Mud Pumps		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.
	Progressing Cavity Pumps		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.
	Reciprocating Pumps		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		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.
	Screw Pumps		Screw pumps are rotary, positive displacement pumps that can have one or more screws to transfer high or low viscosity fluids along an axis.
	Triplex Pumps		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.
	Well Stimulation Pumps		Operations used to increase the production of an oil well. Treatments that are frequently used to rejuvenate old of poorly producing wells
	Other		Other unlisted or specialized pumps.
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Pump Features


	Pump Features
	Your choices are...
	Adjustable Speed		Adjustable speed pumps can operate at speeds that can be selected by an operator.
	Belt Driven		The pumps shaft is driven by a belt.
	Continuous Duty		The pump is rated to run continuously; it can maintain performance specifications at 100% duty cycle.
	Corrosion Resistant		The pump is constructed from corrosion resistant materials, such as stainless steel.
	Pressure Gauge		The pump is equipped with a dial or digital readout of pressure level(s), typically at the outlet.
	Portable		The pump is packaged for easy transportation.
	Sanitary		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.
	Other		Other unlisted, specialized, or proprietary pump feature.
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	Primary Material of Construction
	Your choices are...
	Aluminum		A bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation.
	Brass / Bronze		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.
	Cast Iron		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.
	Plastic		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.
	Stainless Steel		Stainless steel is chemical and corrosion resistant and can have relatively high pressure ratings.
	Other		Other unlisted, specialized, or proprietary material.
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