Coliter®’s eccentric hemisphere valves deliver exceptional shut-off performance in abrasive, corrosive, and high-solid media such as slurry, wastewater, pulp, and mining fluids. The series includes the DYQ3/6/940F/H/Y top-mounted eccentric hemisphere valve and the PBQ3/6/940F/H/Y side-mounted type, both featuring a hardened alloy-sealed rotating hemisphere that minimizes seat wear through an offset (eccentric) design. Available with manual, worm-gear, pneumatic, or electric actuation, these valves offer bubble-tight sealing (Class IV–VI), full-port flow, and resistance to clogging. Constructed from ductile iron, carbon steel, or stainless steel with tungsten carbide or Stellite coatings, they operate at PN10–PN40 (1.0–4.0 MPa) and temperatures up to 250°C. Ideal for power plant ash handling, sewage treatment, metallurgy, and chemical processing—where reliability under extreme conditions is critical.
