Posted to News on 20th May 2010, 09:52
Lever-operated pneumatic valves are compact yet rugged
Parker Hannifin is enhancing its range of high-performance directional control valves with the introduction of a lever-operated model. With compact dimensions and a rugged construction, the new manually operated VikingXtreme pneumatic valves are intended to improve productivity in demanding environments, such as those typical of logging equipment, quarrying, commercial vehicles, saw mills and conveyor systems.
According to Parker, the new valves are designed to offer unparalleled flexibility and functionality. In particular, they offer a variety of different circuit configurations, with both 5:2 and 5:3 functions, including self-centring 5:3 versions. Operation is quick and simple via the multi-position lever arm, which is sufficiently robust to protect it from damage in demanding applications and is designed to be used with gloved hands.
The compact yet heavy-duty valves incorporate innovative spool technology and have been designed for use in pneumatic systems that have to operate at extreme temperatures, between -40 and +60degC, and at pressures of up to 16bar.
In contrast with traditional valves, which typically use O-ring or lip seals between the valve spool and body, the new VikingXtreme valves feature a single-piece aluminium spool that is over-moulded with a specially formulated rubber compound. This eliminates the problems of seals deforming or extruding under conditions of high pressure or flow, while also reducing the number of component parts and extending operating life.
As a result, the new pneumatic valves can be used in higher-pressure, high-flow applications and are available in a range of port sizes, including G1/8, G1/4, G3/8 and G1/2inch.
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