Compact on/off control solution for process control valves March 2001, Bürkert South Africa The Bürkert MiniTOP combines valve control, pilot valves and position feedback in a unique compact unit. In line with its strategy to offer customised system solutions at all levels of process automation, ...
Portable pump stations launched March 2001 Chick Henderson, a leading supplier of industrial pumps and hoses, has developed a revolutionary range of modular pump stations. These self-contained pump stations, housed in appropriately reinforced ...
Parallel slide gate valves March 2001 The Parallel Slide Gate valve from Valvtechnologies provides a bubble tight shut-off, a live loaded stuffing box, protected seats and a reliable and repeatable shut-off.
Sealing surfaces are coated with ...
Versatile valve island/bank March 2001 SMC's Type SY 3000/5000, 5-port solenoid valve assembly is one of the most versatile valve assemblies available. Fully compatible with AS interface, Profibus-DP and Device Net, the assembly features:
...
Final control elements - Part 3: Hysteresis and deadband March 2001, Michael Brown Control Engineering One of the biggest problems associated with the final control element is hysteresis and backlash. This can be roughly defined as the maximum difference obtained in stem position for the same input up-scale ...
Letdown stations - methods for superheating steam February 2001 The secret of success for any desuperheater is to ensure that the water atomises into a fine spray so that the water droplets can be absorbed by the steam
Intelligent control valves for Chinese paper mill February 2001, Valve & Automation The Nine Dragons paper mill in China has recently installed NAF control valves, positioners and diagnostic software.
The valves are used for fluids typical in board machine application; these include ...
AS-i valve monitoring and control February 2001, Switches International Topworx (GO Switch), as a leader in on/off valve control, has recently launched its digital valve monitors/controllers which are available in either AS-i or DeviceNet platforms for rotary actuators.
These ...
Metal-seated quarter-turn valve with zero leakage February 2001 When launched 25 years ago, the Vanessa Series 30.000 from Tyco Valves & Controls was considered the world's first metal-seated quarter-turn rotary process valve offering bi-directional, zero leakage ...
Over one million dosing pump installations worldwide February 2001 Combining the fields of dosing and mixing with expertise in engineering and project management, the Dosapro Milton Roy project department designs and manufactures one of the largest ranges of dosing and ...
Tank blanketing one-device solution February 2001 Tank blanketing is the injection of a gas into the vapour space of a liquid storage tank. This is done to maintain a blanket of gas above the stored liquid to prevent atmospheric air entering the tank ...
Valve and actuator CD-ROM available January 2001, Spirax Sarco South Africa Mitech has a CD-ROM for use by existing and potential users of Mitech valves and actuators. While the main purpose is to promote the company and its product range, there is a wealth of technical information ...
AS-Interface-compatible valve terminals with sensor inputs January 2001, Festo South Africa Festo's on-going development of the compact performance (CP) series of valve terminals has led to the release of the actuator/sensor interface (AS-Interface), a simple open bus protocol which offers considerable ...
Low-cost, high-performance butterfly valve January 2001 Keystone, a Tyco International company, has introduced the Figure 320, a new range of modern, low cost wafer-type butterfly valves, complementing its already significant product portfolio. The valves ...
Chemical resistant valve positioners January 2001, Valve & Automation Valve & Automation says that its AccuTrack Series 1000 combines chemical resistance with high-impact strength and immunity to weathering. Unaffected by electrolytic corrosion and high concentrates of ...
Digital valve monitor and control January 2001, Switches International Topworx (GO Switch), a leader in on/off valve control, is offering its digital valve monitors/controllers, which are available in either AS-i or DeviceNet formats.
These low-cost intelligent devices ...
Ball valve suitable for power station applications December 2000, Spirax Sarco South Africa The standard metal-seated manual ball valve from Valvtechnologies is supplied with a four-year warranty when used for high-pressure water and steam isolation duties in power stations. This is of particular ...
