Fairchild Industrial Products is offering the high flow, high pressure, intelligent electropneumatic valve model T7900. The unit comes in a number of pressure control ranges between 10 and 1000 kPa with flow capacities close to the model 4500 volume booster, up to 200 normal m3/h and various other features.
A built-in pressure sensor, for example, measures output pressure directly at the output port. A remote feedback option is available as well, making pressure measurement possible at a remote location. This pressure signal is subsequently available as 4 to 20 mA signal to the control system.
Output pressure control is done by the built-in PID controller receiving a 4-20 mA signal as setpoint from the control system.
The built-in PID controller can be tuned to the needs of the customer, making the change from the 4 to 20 mA input signal to the required pressure output signal as smooth as possible. The electronic valve is therefore equipped with a four button keypad to make tuning and calibration possible directly from the unit.
Especially in the paper industry the 420 mA output pressure signal, in combination with, for example, the remote pneumatic feedback option, makes it possible to keep track of any pressure losses in systems downstream from the electronic valve. This could be pressure losses, for example, in bellows used as in shoe presses or online coating systems. This way the customer notices immediately when there are any leaks in these systems.
The T7900's four button keypad and liquid crystal display allow easy on-site entry of operating parameters and the precise setting of tuning coefficients for a wide range of applications including machine tool automation and robotics. The display shows output pressure in either psig, bar or kPa.
In addition to the internal feedback sensor, a remote current or voltage feedbacks signal is also standard. Instead of the remote feedback sensor, adjustable dry contact high and low limit alarm relays are available as an option. A remote pneumatic feedback signal is also optional.
Nema 4X, IP65 and Type 4 enclosure allows use in outdoor or washdown applications and its RFI/EMI protection eliminates susceptibility to electromagnetic and radio interference.
Ball valves and actuators optimise HVAC performance Schneider Electric South Africa
Valves, Actuators & Pump Control
Schneider Electric offers the full range of innovative SpaceLogic and EasyLogic ball valves and actuators. These cutting-edge products are designed to optimise HVAC system performance, ensuring comfort and energy efficiency in commercial and residential buildings.
Read more...Alfa Laval expands hygienic valve portfolio
Valves, Actuators & Pump Control
Alfa Laval is expanding its hygienic valve portfolio by introducing the Unique SSV pressure relief valve and the Leakage Detection butterfly valve, alongside new smaller sizes of the Unique Mixproof CIP and Unique Mixproof process valves.
Read more...Preparing pump systems for adverse weather conditions
Valves, Actuators & Pump Control
As the severity of storms in South Africa increases, so has the rush of sediment-laden water become a major issue and a significant challenge for irrigation. When sediment levels rise to just 10 grams per litre or more, the risk of pump wear and dam silting increases dramatically.
Read more...High-flow solenoid valve Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has introduced the new ASCO Series 327C solenoid valve, which features a direct-acting, high-flow design that provides superior flow-to-power ratio. It permits high flows at minimum power levels, making it ideal for use in power plants, refineries, and chemical processing facilities.
Read more...Proportional cartridge valve series is the fastest in its class
Valves, Actuators & Pump Control
Parker Hannifin is introducing the enhanced version of the proportional cartridge throttle valve series, TFP. The new pilot valve further reduces the step response times by up to 30%, making the TFP the fastest valve in its class.
Read more...Proportional cartridge valve series is the fastest in its class
Valves, Actuators & Pump Control
Parker Hannifin is introducing the enhanced version of the proportional cartridge throttle valve series, TFP. The new pilot valve further reduces the step response times by up to 30%, making the TFP the fastest valve in its class.
Read more...Inspection system for leak detection in valves in hazardous areas Extech Safety Systems
Valves, Actuators & Pump Control
Leaking valves in industrial plants not only lead to loss, safety risks and possible contamination and pollution, but also result in high economic costs. Therefore, valves in hazardous areas require regular proper inspection and preventive maintenance to ensure their functionality.
Read more...Control head for automation of hygienic process valves Burkert South Africa
Valves, Actuators & Pump Control
Burkert’s Type 8681 control head is optimised for decentralised automation of hygienic process valves. Thanks to its universal adapter, it can be combined with all normal commercial butterfly valves, ball valves and single- and double-seated valves.
Read more...Hydroformed tube valve body Burkert South Africa
Valves, Actuators & Pump Control
One of the most common necessities for manufacturing pharmaceuticals, cosmetics, food and beverages are diaphragm valves. What used to be a dull two-way race between forged and cast body variants is now being challenged by an exciting, ground-breaking technology. The hydroformed, light-weight diaphragm tube valve body will change the way you think about plant design and operation.
Read more...Global pumping giant ready to support hydrogen economy
Valves, Actuators & Pump Control
With abundant sunshine and wind, southern Africa is perfectly positioned to become a global powerhouse in green hydrogen production. Two key projects are already in advanced stages of development in Namibia. KSB has identified the vast potential of these types of projects in southern Africa, and through its KSB Pumps and Valves subsidiaries in Namibia and South Africa is investing heavily in bringing the right skills to the region.
printer friendly version