Slide valves suit cement and abrasives
A
Rota Val product story
Edited by the Engineeringtalk editorial team
Mar 30, 2004
A new range of slide valves is being marketed by leading European bulk handling valve manufacturer, RotaVal.
A new range of slide valves is being marketed by leading European bulk handling valve manufacturer, RotaVal.
Specially designed to provide a long and effective service life under heavy duty and abrasive handling conditions, the valves are ideal for applications such as the cement and mineral production industries.
The range is available in many different configurations to meet a wide variety of needs, including bodies in cast iron, stainless steel or cast carbon steel, 304 or 316 stainless-steel knife blades and various seals depending on application, pressure and temperature.
For cement applications, the knife edge is faced with stellite to minimise potential wear in operation.
The blade also closes against hardened wedges which push the knife blade firmly into its housing to make a long-lasting dust-tight seal.
Additional special features include the provision of a Ni-hard deflection cone to reduce damage to the seal area.
Brass scraper blades are fitted to remove abrasive material and protect the blade packing, plus four or more pulsed air purge ports to ensure loose material is removed from the valve housing.
Large diameter or twin pneumatic cylinders allow for a positive smooth knife movement reliably and consistently through dense materials.
Both the pulse air purge and drive cylinder are driven from one pneumatic valve for ease of operation.
Valves are available in bore diameters ranging from 50 up to 600mm, and versions can be supplied for operation at up to 10bar(g).
Minimal face to face measurements facilitate easy installation, and drillings may be supplied to DIN, ANSI, BS or JIS standards.
These new valves are already proving themselves in cement industry applications, where service life is considerably increased and maintenance has been significantly reduced in comparison with other types of slide valves.
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