Cast iron butterfly valves are mechanisms that control the flow of liquids and gases in pipes. Butterfly valves are able to provide complete shutoff capabilities through use of a disk that rotates on a shaft connected to a lever or wheel control. When the actuator is turned, the disk stands upright and blocks the flow instead of lying parallel to the pipe.
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Butterfly Valves & Controls Inc.Grapevine, TX 817-421-5343 Located in the heart of Taiwan's Industrial District, Butterfly Valves and Controls are in the perfect location for supplying you with the cast iron butterfly valves you need. Taiwan's excellent sources for high quality ores and their legendary casting capabilities, are combined to create a technically and esthetically superior product. Contact the company today!
Assured AutomationClark, NJ 800-899-0553 Assured Automation specializes in designing custom products for our customers. You are guaranteed to have complete control over the final product, because you design it from the very beginning! Our experienced designers work with you to create the highest quality cast iron butterfly valves for every need, and put an emphasis on timely delivery. Visit our website today for more information!
Posi-flate®St. Paul, MN 651-484-5800 When you are looking for high quality cast iron butterfly valves, look no further than Posi-flate! It is our focus on excellence that has made us one of the best in our industry. Our top notch design team creates only the best products, and our friendly customer service staff is ready to answer any questions you may have. Call our team today, or visit our website to learn more!
Process Development & Control, Inc.Coraopolis, PA 888-732-4070 Process Development & Control's 40 years of experience in design and fabrication of quality valves has gained worldwide customer acceptance and created a loyal customer base. Our manufacturing experience combined with our capacity and equipment allows us to customize the individual characteristics of our cast iron butterfly valves. Visit our website today to learn more about our products!
Colonial Engineering Inc.Portage, MI 800-374-0234 Colonial Engineering Inc. has been creating excellent products since 1972. With a focus on customer service, our team is determined to make your experience a positive one. Our extensive product line is sure to have the one that will fit your needs. Let us be the source for all of your cast iron butterfly valve needs. Call one of our friendly customer service representatives today!
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Butterfly valves are constructed from metal; cast iron is a popular choice for heavy duty applications because of its strength and durability. Stainless steel or aluminum is used for the disc and/or sealing gasket because they are thinner and more flexible metals. Cast iron butterfly valves vary in diameter and flow capacity; some are a few inches while others are a few feet or yards across. Cast iron butterfly valves are used in a range of environments, including underground piping or manufacturing plants by a variety of industries. Butterfly valves can act as throttles that control the flow of a fluid without completely closing the pipe. Cast iron butterfly valves are used with gases, such as air, liquids, like water or petroleum, and mixtures of solids including slurries. Water management butterfly valves must be up to AWWA standards; chemical transport or high pressure lines are a few of the many applications that use butterfly valves.
Cast iron butterfly valves are rotary valves because they use radial motion to open and close. Many cast iron butterfly valves are controlled by levers that only require a 90° turn. When the actuator is turned the disc is rotated and fits tightly in the seal. The disc is moved because the actuator is connected to the shaft that holds it in place. Since the disc is thin, it is not a major obstruction for the flow of the pipe's contents. Cast iron butterfly valves are bubble tight, which means that no liquid or gas can pass through the closed valve. Larger valves have crank wheels that need to be rotated at least once; this minimizes the risk of accidental operation and allows the valve to be opened or closed in increments. Cast iron valves that are located in hard to reach areas can be operated electronically by a machine that turns the actuator when it receives a signal or command to do so. Torque limitations and ratings identify how much power is required to close the valve so that the stem is not damaged by over tightening. Depending on the demands of the pipe line, cast iron butterfly valves may be double or triple offset; that is, the disc may be mounted eccentrically to provide a seal that can withstand very high temperatures and pressure.
