Standarised with our ARI DP range of high quality pneumatic Actuators meaning an ideal choice for large size weir and ST type diaphragm valves. The ARI DP linear type single acting actuators are of spring and diaphragm style, with visual position indicator, emergency hand wheel and easy to assemble control accessories. They are indistinctively provided normally open or normally closed. Large choice of models to match with all pressure drop duties. The actuators when provided with electro pneumatic positioners can perform control operations and link to DCS at the plant. Contact our application engineers! www.comeval.es