Product Digest - Pumps and Accessories
Peristaltic Pump Handles Viscous, Abrasive and Aggressive Chemicals
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.
Appeared In Issue: April 2007
Watson-Marlow Bredel
http://www.watson-marlow.com
Thermoplastic Pumps Now Come in Bigger Sizes
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.
Appeared In Issue: April 2007
Vanton Pump & Equipment Corp.
www.vanton.com
Pumps Provide Accurate Metering at High Flowrates and Pressures
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.
Appeared In Issue: April 2007
Jaeco Fluid Systems, Inc.
www.jaecofs.com
Vertical Pump Fits in Small Spaces
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.
Appeared In Issue: April 2007
Moyno, Inc.
www.moyno.com
Flow Switch Reduces Pump Maintenance
The FLT (flow/level/temperature) flow switch reliably monitors the flow and temperature of liquids, gases, slurries, lubricants, and other fluids to provide wet/dry detection and pump protection from damage due to sudden, unexpected reductions in flowrates. The FLT flow switch has a dual-alarm capability. Alarm 1 provides a pre-warning signal with the detection of low-flow situations between 0.01 and 3 ft/s, allowing the control system or operator to determine whether to keep the pump running or shut it down. When the feed line to the pump begins to run dry, Alarm 2 activates as an emergency signal to shut down the pump immediately to avoid over-heating and subsequent damage. The flow switch can be specified in either insertion or in-line styles for pipe or tube installation.
Appeared In Issue: April 2007
Fluid Components International
www.fluidcomponents.com
Metering Pumps Provide Smooth Fluid Delivery Over a Wide Range of Flowrates
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.
Appeared In Issue: April 2007
Eldex Laboratories, Inc.
www.eldex.com