TechArchive

This article was originally written in the period 1995-2000 Bob Brooks and Noel West from Rietschle UK compare vacuum pump technologies, explaining how the Inovac Roots-type design has evolved. Traditionally, vacuum for the chemical and pharmaceutical processing industries has been generated by steam ejectors, steam ejector liquid ring hybrids and fresh oil pumps. Each has [...]

Original article date: March 1999 The European Sealing Association has published a technical guide covering the correct selection handling and installation of gasket sealing materials. These are crucial factors to ensure safe and reliable performance over the lifetime of the seal and yet are often overlooked! For the majority of flange and gasket joints the [...]

Original article date: May 1998 Ingersoll-Dresser Pumps has developed a new impeller with double row vanes for its CPX range of chemical process pumps. JOHN BOWER Engineering Manager explains why it’s important. Though single stage centrifugal end suction pumps are widely used and are available in many different types none are specifically designed to meet [...]

This article was originally written in the period 1995-2000 The mechanical pump is very much a product of the twentieth century, rather than a remnant of the nineteenth, argues BRIAN JOHNSTON of Spirax Sarco. Think of the advantages of a pump that uses no electricity, is robust and needs virtually no maintenance, yet is low [...]

This article was originally written in the period 1995-2000 Manufacturers of servos, reciprocating clutches, power pistons and automatic transmissions to improve on sealing functionality can now enjoy elastomeric formulations which can handle almost every conceivable combination of heat or cold, pressure, and corrosiveness of the fluid media being sealed. Proven lip seal configurations, and production [...]

This article was originally written in the period 1995-2000 Chris Faulder, European Product Manager with Parker Hannifin Filter Division, looks at filtration designs used in machine design and process engineering. There are two types of filter used for viscous liquid filtration – the filter bag and the cartridge. Filter bags can achieve high flow rates [...]

This article was originally written in the period 1995-2000 The ninth edition of the Dura Seal manual is the source for this introductory article on the fundamentals of mechanical seal operation and design. The mechanical seal was developed to overcome the disadvantages of compression packing. Leakage can be reduced to a level meeting environmental standards [...]

This article was originally written in the period 1995-2000 Laminar sealing rings as grease seals and dirt excluders are an established and effective option for rotating shafts and housings and protect elastomeric shaft seals Laminar Sealing Rings as grease seals and dirt excluders for rotating shafts and housings form a highly efficient labyrinth seal that [...]