Pump Engineering, Ltd., U.K., has introduced its Type 808 bellows sealedglobe valve, a member of the company’s range of valves available in a bellows seal design.The company notes that this valve is an ideal choice for critical, zero-fugitive emission, high-purity or high-vacuum applications where the potential for hazardous emissions has to be eliminated.

The bellows forms a flexible static seal that is leak-free, as long as the integrity of the bellows remains intact. However, should the valve fail, a set of back-up packing allowsit to continue to operate safely until repairs can be made. 

The valve is available in sizes ¼ in., ½ in., ¾ in., and 1 in., and standard features include interchangeable trim sets, bellows packing, PTFE CV ring back-up packing, and PTFE bellows gasket.  The trim characteristics available are linear, equal percentage, quick-open, or double taper.  A range of accessories to enable the valve to suit specific application requirements includes positioners, filter regulators, gauges, I/P limit switches, and solenoid valves.

Badger Type 808 Bellows Valves can be widely used in industrial applications including research and process plants on liquids, gases, or steam, Pump Engineering notes. 

More information is available online.