Valves, Actuators & Pump Control


Rotating disc valves

March 2000 Valves, Actuators & Pump Control

The rotating disc valves from Mitech feature a unique rotating/shearing disc which provides a self lapping rotation and enhanced seat cleaning action which cuts through solids giving a long-lasting tight shut-off. The metal-to-metal seating makes the valves abrasion resistant over a wide temperature range, and their high pressure capability, which is better than industry standards, allows the force to be distributed over a larger area resulting in reduced trim wear.

An abrasion resistant full port eliminates obstruction to flow with minimal pressure drop, while the self-draining body reduces the chance of jamming due to material entrapment, stagnation and degradation. A spring-loaded connection between the disc and drive allows the disc to compensate for thermal expansion or contraction, adjusts for wear, ensures tight shut-off and resists back pressure.

Additional features include body purge connections which have the ability to flush valve cavity and internals while in operation, flat seating surfaces, repairable seats and a simple yet versatile design. Typical applications include for use in media such as steam, coke, fly ash/ash slurry, flammable liquids and gases, sand and boiler water.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Valve technology for tyre presses
September 2019, Macsteel Fluid Control , Valves, Actuators & Pump Control
Production plants for tyres place extremely high demands on valves. Tyre curing presses work at high pressures of steam, water, and nitrogen, as well as at high temperatures. In addition, the very short ...

Read more...
Stafsjö valves protect installations
September 2019, Valve & Automation , Valves, Actuators & Pump Control
When it comes to industrial fire protection systems, reliability is essential. The system, which is often on constant standby for long periods, should be able to respond immediately and extinguish possible ...

Read more...
Innovation embedded in Metso’s DNA
August 2019, Metso South Africa , Valves, Actuators & Pump Control
Apart from the role in technology development, digitalisation is one of Metso’s key enablers to serve its customers better.

Read more...
Valves for molten sulphur or sulphur tail gas applications
August 2019, Valve & Automation , Valves, Actuators & Pump Control
Design engineers at Zwick have solved the ongoing problems experienced with valves on sulphur units. Typical valve problems on large bore line sizes range from seizing of the packing to severe seat damage ...

Read more...
ARCA anti-surge control valves in operation
August 2019, Valve & Automation , Valves, Actuators & Pump Control
Arca supplies its extensive range of valves to nearly all types of industries, but an important part of the product range are valves for turbines and turbo compressors, especially anti-surge control valves. ...

Read more...
Biffi Italia electric actuator launched
August 2019, Emerson Automation Solutions , Valves, Actuators & Pump Control
Biffi Italia, a leading manufacturer of high-performance and reliable valve actuation systems, has introduced the new Icon3000 electric actuator: a smart, powerful multi-turn actuator that offers improved ...

Read more...
New manifold valve design for pressure transmitters
July 2019, Emerson Automation Solutions , Valves, Actuators & Pump Control
Emerson has introduced a new manifold product family for its Rosemount pressure transmitters. Manifolds shut off or equalise pressure at the transmitter and also provide the critical mounting mechanisms ...

Read more...
Double-acting pneumatic cylinder
July 2019, Valve & Automation , Valves, Actuators & Pump Control
Stafsjö’s standard double-acting type SC pneumatic cylinder is manufactured by Ebro Armaturen. It has a solid construction and is designed for tough knife gate applications from 100 up to 320 mm bore ...

Read more...
Schubert & Salzer in control at PVS
May 2019, Macsteel Fluid Control , Valves, Actuators & Pump Control
Belgium-based PVS Chemicals produces extremely pure chemicals for use in the semiconductor industry. One of the company’s outstanding innovations is the production of ultra-pure sulphuric acid. As the ...

Read more...
Ball sector valves and sliding gate valves
Africa Automation Fair 2019 Preview, Macsteel Fluid Control , Valves, Actuators & Pump Control
Macsteel Fluid Control is exhibiting ball sector valves and sliding gate valves from Schubert & Salzer Control Systems at Stand D17.    The robust, efficient ball sector valves are capable of very precise ...

Read more...