Electricitiy + Control February 2015

VALVES + ACTUATORS

ROUND UP

Extending the range of diaphragm valves Originally, this specially sealed version was developed from the GEMÜ 601, 612 and 673 basic types to suit particular customer requirements, and the new GEMÜ 673P9 version will now extend the current portfolio. The manually operated valve is available in nominal sizes DN 8 to DN

Steam jackets for valve bodies

Mitech designs, fabricates and tests its steam jackets to ANSI B16.34 - 1998.The steam jackets are designed to keep the valve body at a set temperature. A hot fluid such as steam, is circu- lated around the valve body keeping the fluid inside both warm and in a liquid state. The steam circulates in the an- nular space between the jacket and the vessel walls and allows heat to be transferred through the wall of the vessel. Mitech’s hub end Inline Globe Control valve body is used as a base and is modified to incorporate the steam jacket. Flange ends become integral, while the flange drilling incorpo- rates blind tapped holes. All valves are pressure and leak tested before and after jacketing. There are numerous jacketing considerations, including flange size, full or partial coverage, types and locations of heated medium connections, materials, bonnet jackets or additional heat coverage for specific areas. Enquiries: Pieter Badenhorst.

50, and has an additional seal provided by silicone O-rings which seal the interior of the bonnet housing from the out- side. This prevents, among other things, lubricant which is normally used for lubricating the spindle, from leaking when autoclaving. It also prevents moisture and dirt from entering the bonnet interior.The GEMÜ 673P9 diaphragm valve is autoclave-capable and sterilisable, as well as CIP/SIP capable. As with the basic types, a standard seal adjuster and optical position indicator are also integrated in the new version. Thanks to their compact design, the valve bonnets are also suitable for use on multi-port valve blocks and tank valves. Enquiries: Email eva.zink@gemue.de

Tel. 011 927 4850 or email enquiries@mitech.co.za