Coliter®’s flange butterfly valves are engineered for demanding applications in water treatment, power plants, HVAC, fire protection, and industrial pipelines. The series includes the D341X soft-sealing flanged butterfly valve with EPDM/NBR liner for cost-effective shut-off, the D343W stainless steel hard-sealed triple eccentric valve for high-temperature steam or aggressive media (up to 425°C), and the D9/641X electric/pneumatic actuated models for automated control. Featuring ductile iron or stainless steel bodies, full-port design, and flanged ends per PN10/PN16 (DN50–DN1200) or ANSI 150# standards, these valves comply with GB/T 12238 and offer Class IV–VI leakage performance. Ideal for systems requiring reliable isolation, low maintenance, and long service life under continuous operation.
