Originally Published MPMN May 2002
SPOTLIGHT
Spotlight on Fillers and DispensersPrecision filling
A
dispense valve is suitable for precision filling applications. The 725HF-SS
accurately dispenses up to 12 oz of low- to high-viscosity materials without
overfilling, underfilling, or waste. Wetted parts are made from stainless steel
or inert polymer for compatibility with a wide range of materials. A fast, clean
cutoff prevents dripping or drooling. Typical applications include filling pouches,
foil packs, bottle, and sample containers. EFD Inc., 977 Waterman Ave.,
East Providence, RI 02914-1378.
Solvent and adhesive dispensers
A
line of dispensers are compatible with traditional medical-grade solvents and
UV adhesives and provide a safe, reliable, rapid, and consistent bonding procedure,
independent of operator variability, for all types of medical polymers such
as PVC, ABS, polypropylene, and polycarbonate. The special shape of the units'
dispensing brushes enables them to dispense solvent on the internal or external
surface of tubing, conical surfaces, soft and rigid drip chambers, needles,
and various types of connectors and components. Solvent is dispensed by inserting
the tubing or component into the relevant port and immediately pulling it back.
TechnoMed Inc., 59 Stiles Rd., Salem, NH 03079.
Pump
and bottle
A bottle is approved for flammable liquid dispensing by Factory Mutual Research
Testing. The 35306 has a one-touch pump providing for one-handed operation and
eliminates spraying and splashing. A cam-lock hinge keeps the lid open or closed
securely and reduces odor. Neither silicone nor latex is used in the product.
Menda, 3651 Walnut Ave., Chino, CA 91710.
Industrial dispense pump
A
dispense pump offers maintenance-free, precision fluid control. The IDS 2000
features a valveless design, with only one moving part—a single rotating
and reciprocating piston made of dimensionally stable, chemically resistant
ceramics. The pump design accomplishes all fluid control functions while eliminating
valves that can clog, fatigue, and fail, causing accuracy drifting and pump
failure over time. The pump will deliver from microliters per dispense up to
1 L/min while maintaining a dispense precision of 0.5% for millions of dispenses
without recalibration or downtime. Fluid Metering Inc., 5 Aerial Way,
Ste. 500, Syosset, NY 11791.
Meter, mix, and dispense valves
Two-component
dispense valves have balanced inlet and outlet spool assemblies that do not
displace material during the shift from the reload to the dispense position.
This feature enables pressure feeding of the right- and left-side components
at up to 1200 psi during reloading while the materials are isolated from the
mixer inlet. After the valves are returned to the dispense mode, an accurate
volume of each component is injected into the disposable mixer inlet by rod
displacement metering technology. The PosiDot valves are available in a 2-in.
metering stroke size with pneumatic drives, programmable electric stepper drives,
or servo-driven motors. Liquid Control Corp., 8400 Port Jackson Ave.
N.W., North Canton, OH 44720.
Filler and dispenser controller
A
controller for fillers and dispensers can be placed in inaccessible areas and
still be programmed and operated via Ethernet with its embedded Web server.
Because the remote console model is dc powered, it can be powered from its standard
Devicenet communications port or an external dc source. A power and diagnostics
LED is located on the front panel, rather than a keyboard and liquid-crystal
display. The IR port has been retained to allow wireless communications and
control with a PDA. Inputs for three additional load cells are included to eliminate
the need for an external junction box. An environmental rear cap is available
for both the remote and full console versions, giving each a NEMA 4X/IP66 rating
and providing protection from dust and hose-directed water. Hardy Instruments,
3860 Calle Fortunada, San Diego, CA 92123.
Dispense valve
A
valve precisely dispenses silicones, mastics, or plastisols. The 2200-727 Snuf-Bak
is designed for use with filled or abrasive materials and provides drip-free
control of high-viscosity materials. The valve features a hardened needle-and-seat
assembly coupled with tough, wear-resistant seals. An all-aluminum body can
handle high-pressure operations and double-air operation and a readily fixtured
housing make it suitable for high-volume applications. Sealant Equipment
& Engineering Inc., 45677 Helm St., P.O. Box 701460, Plymouth, MI 48170-0965.
Syringe pumps
Standard
and custom syringe pumps are available for precision filling and dispensing
applications. The VersaPump series offers syringe volumes ranging from 10 µl
to 50 ml, with three-way to eight-way valve capability. Pumps can be daisy-chained
for continuous-flow applications. They offer chemically inert fluid paths of
Teflon, Kel-F, and borosilicate glass. Resolutions from 6000 to 48,000 steps
are available for better than 1% accuracy and precision. Kloehn Ltd.,
10000 Banburry Cross Dr., Las Vegas, NV 89144.
Dispensing valve controller
Two
dispensing valves can be controlled simultaneously with pneumatic logic that
provides a continuous-off state to any valve designed for four-way operation.
The valve-off state is always active until a signal is received to switch to
the valve-on mode. The valve-on state can be activated from a remote robotic
device when the automatic timer on the unit is off. When the timer is on, the
valve-on state can be activated at intervals ranging from 0.01 to 30 seconds.
I & J Fisnar Inc., 2-07 Banta Pl., Fair Lawn, NJ 07410.
Copyright ©2002 Medical Product Manufacturing News
