QUALITY FEATURES RESILIENT SEATED VALVE Z 011-A MULTIPLE BE A RINGS The shafts have multiple bearings. Optimal guidance even after many years The shaft retainer guarantees blow-out resistance of the shaft. N A R ROW TOLE R A NCES Precision-machined bodies form the basis for perfect seating of the liner and precise positioning of the shaft. CON V E X FOR M OF THE LINE R The end connection sealing faces of the liner have a convex form. During assembly of the valve into the pipeline controlled deformation of the volume of the liner achieved when clamping DOUBLE - SIDED PROFILES Double-sided profiles ensure the sleevebody engagement in the outer body recess. between flanges. This controlled deformation restricts any increase in operating torque and eliminates damage to or destruction of the elastomers. ROUND COLL A R The collars at the shaft locations ensure accurate positioning of the liner within the valve body - sizes DN 250 and larger have an integral vulcanized in steel ring. POLISHE D SE A LING SUR FACES polished and guarantee low CONTINUOUS FOR MING LOBE torque combined with tightness. The continuous forming lobe fits The sealing surfaces are mirror perfectly in the relevant groove of the body, stabilising the lin