Actuators available: Pneumatic, electric, hydraulic, and manual hand wheel.
Curved blade valves are designed to cut off product flow from outlets of storage bins, silos, conveyors, gravity flow chutes and other discharge points handling dry bulk materials.
The curved blade valves are fast acting, tight sealing, and very effective for regulating flow rates. The curved blade valve should only be used when handling fine or granular materials and not materials containing a large percentage of lumps. The housing on larger sizes is constructed of plate steel with cross member supports. The reinforced curved blade pivots on two flanged bearings allowing it to open and close with ease. Actuation of curved blade valves can be accomplished in many ways; pneumatically for fast action, hydraulically for power, electrically for precise positioning, and manually with a chain wheel or lever. The seals are designed to eliminate product leakage when the blade is in the shut off position. The seals are mounted to the housing instead of the blade allowing for easy access and replacement. Blade seals are selected according to the material being handled and are available to suit any application.
DCL offers a large selection of slide gate valves from 6 inches [152 mm] square up to 36 inches [914 mm] square. Slide gates are also available in sizes larger than 36 inches [914 mm] and in special configurations including hardened liners.
A choice of construction materials allow handling of all types of products; fine, granular, lumpy, abrasive, corrosive, and sanitary applications. A choice of electrical options are also available allowing for installation in almost any environment; NEMA 4, NEMA 4X, NEMA 7, NEMA