Description: The DelVal series 50 (wafer body) and series 52 (lug body) butterfly valves have been developed with extensive application, design and manufacturing expertise. These products are produced by employing modern manufacturing practices under a robust quality assurance system, ensuring consistent product quality and dependable performance. The DelVal series 50/52 butterfly valves are designed to include state-of-the-art features: stem connection in standard DelVal sizes or optional sizes to match standard secondary top plate drilling; top plate double drilled to fit ISO 5211 dimensions and standard secondary bolt circle dimensions; all handles, gear operators and pneumatic DelTorq actuators designed to mount directly to DelVal valves; nylon PA 12 coated disc option ensures excellent corrosion resistance to several chemical media, also suitable for use in drinking water and non-alcoholic foodstuffs; one piece stem with close tolerance double D drive eliminates the need for disc screws or taper pins; double O-rings are molded in both upper and lower journals providing a superior secondary seal; unique center-lock seat design virtually eliminates any seat movement during the seating and unseating of the disc; and heavy duty square-grooved seat design with moulded O-ring seals to serve as flange gaskets. These valves meet ANSI #125 /150 or other world drilling standards; high strength disc with hand polished disc edge and hubs; precision machined radius on the upper and lower disc hubs is pressed against upper and lower seat sealing faces for achieving primary sealing between disc and seat.
Other Catalogs (From DelVal Flow Controls Pvt. Ltd.) :
