Valco Instruments Co.

Cheminert Model M6 and M50 Positive-Displacement Pumps
The Cheminert Model M6 and M50 positive-displacement pumps produce a bi-directional pulseless flow with a range of over six orders of magnitude: 10 nL/min to 10 mL/min for the M6, and 50 μL/min to 50 mL/min for the M50. They are suitable as replacements for syringe pumps, and eliminate the need for refill cycles and syringe changes. RS-232 and RS-485 communication protocols are incorporated into the mircoprocessor-driven controller. The software package controls flowrates, flow direction and metered volumes. While the standard package includes software and instructions to run the M6 as a stand-alone unit, the software can also integrate a multiposition streamselection valve.

Spirax Sarco, Inc.

Pivotrol pressure-powered condensate pump
The Pivotrol pressure-powered condensate pump is designed for condensate recovery in rapidcycling process environments. Its PowerPivot technology replaces pins and linkages with pivots, which reduces friction and wear and lengthens service life. A dampener uses the hydraulic inertia of the collected condensate to reduce mechanical shock as the valve actuators shift. The pump is backed by a three-million-cycles or three-year warranty, with a lifetime spring warranty; a five-million-cycles extended warranty is available as an option. An integral electronic cyclecounter monitors the pump’s performance and confirms warranty coverage.

American Lewa, Inc.

Series M900 Diaphragm Pumps
Series M900 diaphragm pumps are equipped with automatic volumetric venting valves, which safely discharge any vapor or gas bubbles that form in the hydraulic reservoir as a result of caustic solution reactions. They feature sealless PTFE sandwich diaphragms that can handle abrasive slurries and do not need a front support plate. The pumps are available in a variety of wetted materials to meet specific metering applications and caustic compatibility requirements. They can meter/pump caustic solutions (caustic soda and sodium hypochlorite) from 0 to 35 gal/min per head, with pressure variable to 5,800 psi, and offer ±1/2% steady-state accuracy, repeatability and linearity.

Busch USA, Inc.

COBRA N singlestage direct-driven rotary-screw dry vacuum pumps
The COBRA N singlestage direct-driven rotary-screw dry vacuum pumps incorporate a monoblock, continuously variablepitch screw design, which allows them to operate more efficiently and provides a higher cfm-to-horsepower ratio than traditional dry screw vacuum pumps. They provide vacuum down to 0.0074 torr and pumping speeds up to 225 actual ft3/min. Direct-cooled and closed-loop air-cooling models are available.

Watson-Marlow Bredel

520RE high-pressure chemical-metering peristaltic pump
The 520RE high-pressure chemical-metering peristaltic pump can operate at pressures up to 100 psi. Its combination of tube elements and pumphead design allows it to be used in applications requiring accurate metering, dosing and transferring of harsh chemicals, including sodium hypochlorite, ferric chloride, sodium bisulfite, aluminum, fluoride, carbon and lime slurries, polymers, aqueous ammonia, potassium permanganate and caustic slurries. The 520RE pump offers flows of 3,500 mL/min at 30 psi to 450 mL/min at 100 psi. Reliable, accurate and easy to use, the pump covers a wide range of applications, including low-shear feed for the contamination-free transfer of acids, bases and slurries found in chemical-based industries. Validating a sanitary process is made easy with the 520RE because all element-wetted parts are USP Class VI and ISO 10993 certified with a laser-etched lot number.

704 U/RE Peristaltic Pump
Designed for metering and dosing of corrosive, abrasive and sensitive fluids, the 704 U/RE peristaltic pump features increased production speed and flow control for high-capacity throughput, with flowrates up to 1,500 L/h and peak pressures up to 30 psi. With no valves or seals to clog, it requires minimal maintenance.

520/620/720 peristaltic pumps
  The 520/620/720 peristaltic pumps are designed for the accurate metering, dosing and transferring of sensitive fluids in sanitary environments, making them ideal for accurate filtration, fermentation, dispensing, coating and seamless integration into reusable or disposable bioprocess applications. The 720 Series peristaltic pump allows for production speed and flow control for high-capacity throughput, allowing the user to scale up from laboratory operations to production using the same pump interface familiar to the 520 and 620 user. The 720 Series offers flowrates up to 33 L/min and peak pressures up to 30 psi. The 520/620 peristaltic pumps combine power and control in a compact and rugged package. The 520 combines the ability to perform in-process applications, with dispensing and dosing programming built in to handle delicate laboratory environments and the accuracy demands of filling lines. The 620 Series is ideal for a wide range of biotech and pharmaceutical applications, including the scale transfer of pharmaceutical products, live cell cultures, nutrients and bioreactor constituents.

SPX corrosive chemical pump
The SPX corrosive chemical pump features a Bioprene thermoplastic elastomer (TPE) hose element that has excellent chemical resistance to many of the harshest chemicals. And because the hose element is the only component in contact with the pumped product, corrosive and abrasive wear are not factors for the pump’s rotor or body. With no seals to replace, no check valves to clog, and no rotors or stators to wear out, the SPX pump is virtually maintenance-free. These self-priming pumps accommodate flowrates from 0.1 mL to 350 gal/min, provide up to a 30-ft suction lift, can withstand pressures up to 232 psi, and can run dry indefinitely without damage.

Moyno, Inc.

300 Series Non-Motorized Pump
The 300 Series non-motorized pump is available with either a gear motor or a belt-drive configuration. It features capacities to 15 gal/min, pressures to 150 psi, interchangeable rotors and stators, fluid temperature compatability to 210°F, packing gland or mechanical seal options, and easy disassembly. A fully molded “wobble” stator increases compression fit during operation between rotor and stator, resulting in improved performance.

Vertical Pump
Its compact, vertical, close-coupled design allows this pump to easily fit into confined areas, where it can be flange-mounted to closed tanks or affixed to mounting beams above open tanks. The pump has a flow range of 20–350 gal/min and pressure capability to 150 psi, and is compatible with vessels up to 20 ft deep. Mechanical seal replacement is simple and can be done without removing the pump from the sump or its mount. The pump can handle high-viscosity, high-solids-content materials, as well as abrasive fluids.

High-Solids Pumps
These high-solids pumps dramatically reduce the costs of transferring biomass slurries and distillers dried grains with solubles (DDGS) byproducts compared to conveyor systems, which tend to be more expensive and maintenance-prone. Based on a technology advancement suitable for biodiesel and ethanol plants, as well as distilleries, grain processing, and feed mills, they easily handle abrasive and corrosive DDGS applications. The pumps eliminate odors and spillage typically found with open conveyor systems, and because their closed pipe design has fewer moving parts than a conveyor system, capital and maintenance costs are lower.

Nikkiso Pumps America, Inc.

Type HX high-temperature non-seal canned motor pump
The Type HX high-temperature non-seal canned motor pump is designed for hot fluids (maximum 662ºF, 350ºC) without cooling. The pump uses an exclusive all-ceramic motor insulation system and can be externally insulated for maximum system thermal efficiency, making it ideal for heat-transfer oil services. Optional jacketing in conjunction with the ceramic motor insulation system makes the HX well suited for handling high-melting-point liquids (above 284ºF, 40ºC), which would exceed the temperature limits of normal organic motor insulation materials. For further safety and efficiency, an inbuilt Nikkiso E Monitor bearing monitor system helps to detect bearing wear. When bearing wear occurs, the rotor assembly shifts along the radial and/or axial position. Eight embedded search coils in the stator enable precise readings of bearing wear in both directions. Real-time status can be conveniently monitored on an LED display built into the Type HX.

Barnant Co.

“Barnant Newsline”
“Barnant Newsline,” a newsletter for wastewater treatment plant managers and operators, provides useful and timely data, case studies, and technology news briefs regarding state-of-the-art peristaltic pump technology for critical dosing, chemical delivery and product transfer.

Teikoku USA, Inc. Chempump Div.

Dynapump LE Series of sealless, canned motor pumps
The Dynapump LE Series of sealless, canned motor pumps combines state-of-the-art design with global manufacturing efficiencies to provide reliability, secondary containment, and bearing-wear monitoring in an ANSI B73.3- compliant, plug-and-play sealless pump. These standard features make maintenance less frequent and more predictive. The pump’s sealless centrifugal motor enables plants to exceed industry standards for environmental, personnel and facility safety. Also, because the pump has a smaller footprint and requires less maintenance than comparable products, its initial and long-term costs are lower. The Dynapump LE Series features corrosion-resistant Type 316 stainless steel construction, with plans for Alloy 20 fabricated models in the works.

Vanton Pump & Equipment Corp.

Thermoplastic Pumps - Case History
This case history spotlights an automated, zero-discharge water-reuse and chemical-recovery system at a metal-furniture manufacturing facility. It explains how the system recovers close to 100% of the plating and cleaning chemicals in the waste stream, enabling the plant to recover and reuse a major portion of the 150,000 gal/d of municipal water previously used. It also describes the system’s pumps — horizontal centrifugal pumps with all fluid-contact parts made of solid homogeneous Kynar polyvinylidene fluoride (PVDF).

Model CGA-8×6×13 (ANSI-A-90) and Model CGA-8×5×15 (ANSI-A110) Pumps
Two new sizes have been added to this firm’s line of ANSI B73.1 centerline discharge, rear-pullout horizontal process pumps, Model CGA-8×6×13 (ANSI-A-90) and Model CGA-8×5×15 (ANSI-A110). Flow capacities range to 3,100 gal/min and heads to 350 ft. Fluid contact is restricted to thermoplastics — polypropylene and polyvinylidene fluoride (PVDF) — and other non-metallic materials. A sliding bar pedestal design simplifies mechanical seal inspection without disturbing the piping, minimizes shaft deflection, reduces maintenance, and allows for the use of any commercially available mechanical seal.

Air Squared, Inc.

Semi-Hermetic Scroll Vacuum Pump/Compressor
Originally developed to pump helium for a space-based cryo-cooler, this new semi-hermetic scroll features a patent-pending design that completely seals the pumping section of the unit, but allows cooling of both scrolls. Cool operation enables the unit to operate effectively at higher pressures and vacuums. As a compressor, the unit can develop up to 60 psig and has a displacement of 2 ft3/min. The vacuum model can develop up to 200 mtorr ultimate vacuum, with a displacement of 2 ft3/min. The unit runs at volumetric efficiencies greater than 80% and its wetted surfaces are constructed of stainless steel, nickel and hard anodized aluminum. Standard seals are PTFE composite, with other materials, such as polyimide, available to withstand specific gases.

Blackmer, a Dover Co.

ProVane pump
The ProVane pump has self-adjusting vanes to eliminate efficiency-robbing slip, thereby allowing it to maintain near-original output and consistency, even after significant wear. Available in both ductile iron and stainless steel, its heavy-duty rotor and low shaft-stiffness ratio, combined with its hydrodynamic bearing design, result in extended bearing life, improved efficiency and energy consumption, better volumetric performance, and longer life. Five sizes, ranging from 3/4-in. to 2-in., are available, with operating speeds of 1,200, 1,800 and 3,600 rpm and capacities from 1 to 100 gal/min.

Micro C-Series pumps
The Micro C-Series pumps, like the larger C-Series pumps, can be drained, flushed and cleaned without disassembly. Three models designed for transferring small doses in continuous applications are available: the MC500 for flowrates of 0.1–2.2 gal/min (0.4–8.3 L/min) at 72.5 psi (5 bar) maximum pressure; the MC250 for 0.05–1.1 gal/min at 145 psi; and the MC125 for 0.03–0.6 gal/min at 217.5 psi. The pumps feature sealless construction, are self-priming, and can be run dry for short periods of time. They measure 9.5 in. long × 5 in. high × 4.5 in. wide, and weigh 17 lb.

Bran+Luebbe GmbH

ProCam Hygienic metering pump
The ProCam Hygienic metering pump meets the European Hygienic Engineering and Design Group’s (EHEDG) standards and is suitable for use in hygienic and aseptic applications. Wetted parts are made of electrically polished Type 316L stainless steel with a high-quality surface finish of  Ra 0.4 to Ra 0.8. The PTFE double membranes and seals are FDA-certified. The unit’s front cover and valves are designed so they can be easily and completely cleaned.

ITT-Flojet

Triplex positive-displacement pump
Made of polypropylene and nylon, and elastomers such as Santoprene, Viton and EPDM, the Triplex positive-displacement pump can handle tough chemicals without corroding. It is manufactured using co-injection mold diaphragm technology, which virtually eliminates potential leak paths. A unique bypass design allows the pump to adapt to a range of flowrates at a constant pressure — up to 2 gal/min and 150 psi. It is available in 12- and 24-VDC, as well as 115- and 230-VAC, models.

Neptune Chemical Pump Co.

500AR hydraulic diaphragm metering pump
The 500AR hydraulic diaphragm metering pump is designed with an automatic air-release (AR) valve for use with chemicals that off-gas at room temperature, such as sodium hypochlorite. A polyvinyl chloride (PVC) head design minimizes internal space and eliminates areas where gas can accumulate. All ports slope upward to vent gas through the top of the pump and away from the polytetrafluoroethylene (PTFE; Teflon) diaphragm. The PVC AR head can be specified on any of 500E series pump with capacties up to 9 gal/h (higher-capacity pumps purge gas naturally). All Series 500 models have a micrometer dial that allows manual adjustment over a 10:1 turndown range. Automatic control options include pneumatic or electric stroke-length adjustment and variable-speed drives.

Tacmina PZ Series electronic metering pumps
Tacmina PZ Series electronic metering pumps operate at a capacity that can range from 1 to 1,300 mL/min, and at pressures up to 220 psi. They are available in manual control, external input and programmable models. The pumps are suitable for applications that require accurate, reliable injection of liquid chemicals, nutrients or disinfectants. They will operate on any single-phase voltage, from 94 VAC to 264 VAC, and their patented design leaves flowrates and accuracy unaffected by voltage fluctuations. The programmable-model pump comes with onboard pH control and residual chlorine control without requiring a separate PID controller. Depending on the selected model, PZ pumps can be specified with either PVC, PVDF, or Type 316 stainless steel liquid-end construction. 

Versa-Matic Pump Co.

E8 3/8-in. Mini-Matic can pump
Despite its small size and light weight (3 lb), the E8 3/8-in. Mini-Matic can pump up to 6.8 gal/min (26 L/min) at pressures up to 100 psi (6.8 bar). It can be mounted upright, sideways or inverted for use in a wide variety of applications. It features the Elima-Matic air valve system to eliminate leakage and deliver non-stalling, non-icing lube-free operation. Wetted components can be made of polypropylene or Kynar, and interiors of Santoprene, Geolast or Teflon.

E7 aluminum diaphragm pumps
E7 aluminum diaphragm pumps have a port size of 0.75 in. and feature a leakfree, bolted construction. Their shoe-valve design prevents blow-by when the pump is online but not in use. They employ the manufacturer’s Elima-Matic air-valve system, which ensures non-stalling, non-icing, lube-free operation. For use in lubrication, adhesive dispensing, OEM systems and many industrial applications, the E7 pumps are available with either metallic or non-metallic air sections.

Viking Pump

LVP series stainless steel vane pump
With 14-bar/200-psi thin-liquid capability and capacities to 45 m3/h (200 gal/min), the LVP series stainless steel vane pump is designed for low-viscosity, corrosive liquids at higher pressures than other positive-displacement pumps. Its stainless-steel casing (which is surface-hardened to 62 Rockwell C), chrome-oxide-coated shaft, and silicon carbide bushings contribute to longer service life. Polyaryletherketone (PEEK) vanes offer high strength, low friction for less wear, and broad chemical compatability. The LVP series is available in a metric-standard design, with DIN flanges, IEC motor mount, and metric-standard shaft-seal options, as well as with ANSI flange ports, NEMA motor mount, and inch-standard seals.

Flexicon America, Inc.

Peristaltic Pump
The closed fluid path that characterizes the peristaltic process of this pump assures that sterile product never comes in direct contact with any moving parts before being dispensed. Product passes from the bulk tank directly into sterile medical-grade silicone tubing that is placed onto the circular track of a filling head. A very gentle massaging motion lightly compresses the tubing against a proprietary dual-roller rotor to achieve a smooth, non-pulsing flow. This gentle pumping operation moves and dispenses even the most delicate liquids. A simple change of the sterile tubing and filling needle is all that is required during product changeover.

Jaeco Fluid Systems, Inc.

H-Flo packed-plunger, positive-displacement metering pumps
A single ball check valve enables the H-Flo packed-plunger, positive-displacement metering pumps to provide heavy-duty, virtually maintenance-free metering of chemicals and solutions. The pumps are available in both simplex and duplex models, with capacities ranging from 20 to 682 gal/h at pressures up to 7,200 psi with an accuracy of ±0.5% at steady state. Pump capacity is adjustable from 0 to 100% by varying the piston stroke length while the pump is stopped. Duplex pumps are normally 180-deg. out of phase, but can be synchronized so that two fluids can be pumped simultaneously.

Eldex Laboratories, Inc.

Optos Series metering pumps
Optos Series metering pumps employ a positive-displacement, reciprocating piston assembly to provide precise metering at high pressures (up to 6,000 psi). The piston is driven by a high-resolution stepper motor using advanced sine-wave-adjustment speed algorithms to maximize flow output and minimize pulsations. Three models are available for flows of 0.002–20 mL/min, 0.003–40 mL, and 0.01–80 mL/min. The materials in the liquid end are chosen based on corrosion resistance; the piston is sapphire, and the inlet and outlet valves incorporate sapphire seats and ruby balls. The standard piston material is ultra-high-molecular-weight polyethylene, with graphite-fiber-reinforced polytetrafluoroethylene available for specialized applications.

Goulds Pumps

Model 3500XD X-Ducer medium-consistency paper-pulp pump
The Model 3500XD X-Ducer medium-consistency paper-pulp pump features a patented air-separation device that agitates paper pulp to assist flow into the pump inlet, while separating air from the water and fibers. The pump achieves lower operating costs and smaller motor sizes by increasing efficiency by 5–8% and enabling the pumping of medium-consistency pulp up to 10% without the use of a vacuum pump. Also, the head generation has increased, typically by 5%. The Model 3500XD uses the manufacturer’s inducer technology and can be retrofitted in the field

Ingersoll-Rand Co.

ARO Pro Series of diaphragm pumps
The 2- and 3-in. ported metallic models in the ARO Pro Series of diaphragm pumps are now available in additional materials of construction. Previously offered only in aluminum, the Pro Series now includes cast iron and stainless steel models. Like their aluminum counterparts, the new models feature patented air-valve technology that eliminates pump stalling by utilizing an unbalanced design — by creating an optimal pressure differential, air valves do not center, even under low air inlet pressures. Unbalanced valves reduce production loss and downtime by providing better shift signals and delivering faster trip-over with more flow (172 gal/min and 237 gal/min, for 2-in. and 3-in. models, respectively). With bolted construction and a variety of material options, these pumps feature leak-tight integrity and excellent chemical compatibility. O-rings and U-cups prevent air leakage by providing a positive seal as the air valve shifts. Air flow stops when the fluid flow stops.

KD Scientific

KDS 310 Nano Pump syringe pump
For pumping radioactive chemicals where a beta or gamma shield must be present, the KDS 310 Nano Pump syringe pump features a remote pumping unit and control box that can be located up to 6 ft away, thereby protecting the operator. The pump is used exclusively with micro-syringes in sizes from 0.5 to 250 µL. Small size, remote control and a rugged mounting arm make it suitable for use with micromanipulators, stereotaxic frames and other clamping devices. When used on a stereotaxic frame, direct injection can be performed, thus reducing the volume of sample required. The pump’s microprocessor-based controller uses a bright display and membrane keypad with a simple, menu-prompt system for easy setup, as well as preset rate and volume control. The volume to be dispensed is displayed continuously, and the pump shuts off automatically when the preset volume has been reached.

Supercritical Fluids Technologies

SFT-20 liquid carbon dioxide pump
The SFT-20 liquid carbon dioxide pump delivers a flowrate of 200 mL/min without the need for external cooling baths. Instead, it relies on high-capacity Peltier cooling to stabilize pump head temperature, which maintains highly efficient compression even under high-flow conditions. The pump employs dual sapphire syringe-pump technology to rapidly and accurately produce pressures up to 10,000 psi, making it suitable for use in supercritical fluid applications. The SFT-20 is available both as a stand-alone pump and as part of the SFT-2000 supercritical fluid extractor.

Fluid Metering, Inc.

Industrial Variable Speed Pump
Suitable for handling a broad range of fluid viscosities, the Industrial Variable Speed Pump (IVSP) features a high-torque, 3-phase variable-speed drive, an integrally mounted valveless pump head, a space-saving, DIN-designed controller, and a 3-digit LED display control module. Motor speed can be adjusted either manually via the front-panel membrane switches, or electronically using 0–20-mA, 4–20-mA or 0–10-VDC input signals. Additional control functions include start, stop, acceleration, forward and reverse. Flowrates cover a range from 0.45 mL/min up to 2,300 mL/min, and are determined by the combination of drive speed, piston size and pump head stroke length. All electronic components are UL- and CE-compliant.

Unifin International

Cardinal transformer-oil pumps
Cardinal transformer-oil pumps are rated for continuous-duty operation at temperatures from –40°F to 212°F. They allow thermo-siphon flow when the pump is not operating, which permits natural convection even when the pump is completely shut off. Along with a rugged split-casing design, the use of heavy-duty class 30 cast iron for the pump casing, motor enclosures, impellers and volutes extends the life of the pump. Large thrust-face sleeve bearings minimize wear and reduce maintenance. Three bearing types are available — a standard sleeve bearing, the manufacturer’s Harley sleeve bearing, and the Harley sleeve bearing with TecSonics bearing-wear monitoring. With two gasket seals on each pump, and no mechanical seals, repair and upkeep are reduced. Durable and resilient, the pumps’ design allows transformer oil flow back through the motor and bearings, thereby providing cooling and lubrication.

Wm. W. Meyer & Sons, Inc.

Pneumatic Screw Pump
Designed for the chemical, cement and mining industries, this pneumatic screw pump is a heavy-duty injection pump that feeds dry pulverized material into a pneumatic conveying line. Constructed with a heavy steel channel frame, oversize bearings, integral check valve and low inlet-hopper height, it is capable of conveying pressures up to 15 psi. It can handle highly abrasive, friable or very fine powders that typically wear out other dilute-phase feeders. Unlike rotary airlocks that require tight clearances to seal against conveying air, this pump uses the material to form the seal. An integrated gate prevents blowback, and the pump can withstand temperatures up to 450°F. It offers increased wear resistance to abrasive materials, as well as a low profile and longer bearing life with fewer system shutdowns, resulting in reduced operating and maintenance costs.

Crouzet North America

Peristaltic Pump Gear Motor (PPGM) series
The ultra-quiet peristaltic pump gear motor (PPGM) series is designed for use with a wide range of peristaltic positive displacement pumps, including those that operate in liquid transportation, dosing and ultrafiltration applications. The motors are built to withstand the highly cyclical requirements typical of peristaltic pumps by generating significant torque at a relatively low operating rate. Specific pump requirements are translated into torque, speed and current to provide the exact motor response needed for the pump to provide the right flowrate and pressure for a specific application. Available in 16-W and 30-W models, the motors feature a nominal gearbox torque of 0.5 Nm and an operating voltage of 24 V. Optional encoders deliver 1 to 48 pulses for accurate pump flowrate control.