Robust metal-seated ball valves February 2002 Valvtechnologies' metal-seated ball valves are designed to operate in high temperatures, under high pressures, in erosive environments.
The integral seat design improves performance over conventional ...
Control valve retrofit October 2001 In many cases when an existing valve needs to be replaced in a plant, the valve body is still in good condition but the trim is no longer suitable, and in addition, the actuator and positioner need to ...
RF tag streamlines valve maintenance procedure September 2001 A major American gas company operates numerous gas substations throughout an environmentally harsh region. Within the substations are many valves regulating the flow and pressure of the natural gas through ...
Electronic I/O and pneumatic valve island September 2001, Bürkert South Africa, PI SA (PROFIBUS & PROFINET SA) Bürkert have developed an easy way to combine process actuation, electronic I/O and fieldbus.
In line with its strategy to offer customised system solutions at any level of process automation, Bürkert ...
Wide choice of solenoid valves September 2001 RGS solenoid valves are now available with the option of the CNOMO interface. This feature is now included on all standard 1/8, 1/4 and 1/2" remote, manifold and sub-base mounted valves, including all ...
Ensuring uniform heat distribution August 2001, Valve & Automation In low-temperature applications with broad temperature envelopes,steam tracing can be effective. However, in these types of applications, the position of the tracers and the temperature distribution in ...
Steam atomising desuperheater August 2001 In some applications it is required to reduce the temperature of superheated steam. This is achieved by adding vaporised water to the steam where the small droplets will absorb energy so the temperature ...
Mud drum blowdown valves go automatic August 2001 The manual mud drum blowdown valve is found on most boilers to clean the drum of all unwanted dirt and grime that collects at the bottom of the drum during normal operating conditions. Applications vary ...
SA's own control-valve sizing program August 2001 Mitech has recently released what it claims to be the first computerised control valve sizing program to be written in South Africa. Windows-based, this program runs on any PC operating in a Windows environment, ...
Control valve specification made fast and accurate August 2001 FirstVue valve sizing software helps the user identify the control valve package best suited to each set of service conditions. Its powerful valve selection features can be used to specify either a single ...
Fast-switching valves feature long operational lives July 2001 Experience from Formula 1 motor racing has proved that only a combination of maximum speed and stamina makes a champion. Just like the new high-speed valves Type MH...2- from Festo. Fast switching times ...
Turbine valve monitor June 2001, Switches International GO Switch/Topworx, which has been producing the ultra reliable GO switch since 1950, is offering the Defender turbine valve monitoring system. This is a simple drop-in unit that replaces the often less ...
Hygienic angle valve May 2001 Mitech's locally designed and manufactured hygienic angle valve is available for the food, beverage and medical industries. The valve is claimed to have a higher pressure rating compared to imported models. ...
Explosion proof valve controller for dangerous environments May 2001, Valve & Automation The Westlock Accutrak Eliminator 9000 is specifically engineered for the monitoring and control of diaphragm valves. Certified to UL and CSA, the 9000 Series utilises high current, hermetically sealed ...
AS-i valve monitor and control April 2001, Switches International Topworx (GO Switch), has recently launched its digital valve monitors/controllers, which are available in either AS-i or DeviceNet platforms for rotary actuators.
These low-cost intelligent devices provides ...
Valve sizing software package April 2001 All control valves should be selected to suit the application if they are to perform well over a long period. A significant proportion of all control valves are oversized and control too close to the ...
Dual valve sealing doubles the benefits for chemical company April 2001 Fugitive emission detection (FED) ball valves from Hindle, normally used to prevent leakage of critical services to atmosphere, are also being ingeniously used by Elf Atochem to ensure zero air ingress ...
Chemical-resistant valve positioners March 2001, Valve & Automation The AccuTrack Series 1000 from Valve & Automation combines chemical resistance with high-impact strength and immunity to weathering. Unaffected by electrolytic corrosion and high concentrates of alkalies, ...
Noncontact position monitoring for rotary valves March 2001, Valve & Automation The Epic noncontact position transmitter represents a significant departure from previous attempts to reliably measure the position of rotary control valves. As opposed to conventional devices, couplers ...
