FOCUS: WATER/WASTEWATER APPLICATIONS
L. Bernard and USA subsidiary Bernard Controls Incorporated has introduced a new extended range of quarter-turn electric actuators primarily for use in the water and
wastewater and industrial markets, enabling the company
to provide larger torque quarter-turn actuators from 100
up to 88,000 in-lbs available for quick delivery.
Electric actuators for all types of service from standard
on-off to high precision Class II modulating service are
available. Most standard on-off actuators are available
from stock with options for modulating and integral controls available in 3 to 4 weeks.
CIRCLE READER SERVICE #8
LINEAR DRIVE AND QUARTER-TURN
Festo is launching a series of highly integrated pneumatic
drive products that are suitable for wastewater treatment
plants or systems used in the chemical industry. The new
DFP series includes a completely self-contained linear
drive unit, and a quarter-turn actuator that uses a rack-and-pinion design.
DFPI linear drives are particularly suitable for use
with gate valves in was tewater treatment plants to
accurately regulate the flow of digested
sludge into digester tanks.
The DFPB pneumatic quarter-turn actuator is intended primarily for automated
control of the flow of
biogas created in
though it is equally
suitable for process
control applications in
areas as diverse as the pharmaceutical industry and cof-fee-roasting plants. When combined with an electro-pneu-matic position controller, the actuator can also used for
high-precision positioning applications, such as the control
of ball-and-plug, shut-off and butterfly valves. The actuator uses rack-and-pinion technology to convert the linear
movement of the piston into rotation of the shaft.
CIRCLE READER SERVICE #165
EmNet LLC has just completed a pilot project in Indiana that
could save municipalities around the world millions in infrastructure improvement costs and prevent combined sewer overflows.
The company, which received a more than $1 million grant
from Indiana’s 21st Century Research and Technology Fund in
2007, has developed a wireless technology that acts as a traffic
signal to electronically direct and control the flow of wastewater
through underground pipes and retention ponds linked to a
municipality’s existing sewage and storm water infrastructure.
The system is currently being field tested in South Bend, IN.
EmNet’s patented decentralized control system monitors
water flow during times of intense rain and prevents dry weather overflows, maximizing the use of existing infrastructure and
use of the wastewater treatment facility.