Butterfly Valves/

Flanged Butterfly Valves

Flanged butterfly valves are mechanisms that control the flow rate of a fluid as it moves through a piping system. The outside edges of the valve are raised and have holes so that the valve may be bolted onto a pipe. Butterfly valves consist of a seal around the wall of a pipe, a round or elliptical disc and a control lever. The control lever must only be rotated 90° in order to close off the pipe because butterfly valves are quarter turn valves.

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Butterfly Valves & Controls Inc.
Grapevine, TX
817-421-5343
Butterfly Valves & Controls, as the exclusive USA Representative of Value Valves Co. suppliers resilient seated wafer & lug butterfly valves along with high-performance, triple eccentric & AWWA butterfly valves. In-house assembly of valves with lever or gear operators, electric or pneumatic actuators. We strive to offer the finest service in the business, quality packaging & responsive deliveries.
 
Advanced Valve Design Inc.
Whitehall, PA
610-435-8820
At Advanced Valve Design, our standard butterfly valves can be used for air, gas and water applications where absolute "tight" shut-off is not required. Our standard valves are available in wafer or lug and are designed to fit between ANSI 125/150 LB or RPM flanges. We are able to manufacture designs capable of handling temperatures from -20ºF to +450ºF. To learn more, please visit our website.
 
ABZ Valves & Controls
Madison, KS
620-437-2440
ABZ Valves & Controls is a manufacturer of American-made, resilient seated, rubber seated and Teflon® seated butterfly valves. These valves are used for chemical, food, sanitary and general-purpose applications. Our quality products, competitive pricing and prompt deliveries continue to make our company prosper. We are ISO 9001-2008. Call us today for your butterfly valve needs.
 
Stockton Valve Products
Houston, TX
713-664-2918
Stockton Valve is a supply chain partner offering valves, actuators, flanges & hoses, expansion joints & couplings & valve automation services. In business since 1954, we still serve industrial & commercial markets. We offer high performance butterfly valves & resilient butterfly valves as well as ball, gate, check valves & more. Whatever you need we offer precise solutions & professional support.
 
Quadrant Valve & Actuator, LLC
Broussard, LA
877-625-5858
Quadrant Valve & Actuator was founded in 2000 with a single focus on designing and manufacturing the safest, most contemporary quarter-turn valve products available anywhere on the globe. Quadrant succeeded with the introduction of its proprietary lines of seal-welded, ASME/API/ISO code compliant ball valves and butterfly valves that solve customers' real-world safety and code-compliance issues.
 
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Flanged Butterfly Valves


Flanged butterfly valves may be made of stainless steel, cast iron, plastic or other materials, although metal is the most common. The diameter of flanged valves ranges from a few inches to a few feet because they are used for a variety of applications. Butterfly valves are able to completely shutoff a pipe quickly and easily while withstanding high volumes, pressures and temperatures. There are different kinds of butterfly valves that are designed specially to work with different materials and in specific applications. Flanged butterfly valves can be classified as rotary, pneumatic and hydraulic valves and are used in water distribution, chemical services, ventilation applications and other situations involving a liquid or gas. They are particularly beneficial in settings that require pipe shutdowns quickly and efficiently, in case of an emergency.

Flanged butterfly valves rely on a round vane or disc for operation.  The disc is centrally mounted on a shaft or stem, which acts as the axis for the rotating disc. When the valve is open the gas, liquid or slurry flows through the pipes and through the valve.  The disc lays parallel to the pipe and the direction of the current. When the lever or crank wheel is engaged, the disc is rotated and stands upright, securely plugging the pipe. Unlike other valves, butterfly valves do not trap volumes of liquids or gases between valve components because there is only one part that creates the seal. Flanged butterfly valves have at least one flange that allows it to be added in between pipes in a line or system. The flanges are part of the enclosure that contains the valve so flanged butterfly valves are actually short pipes in and of themselves. Lug and wafer butterfly valves are two other methods of integrating the valve. Lug valves are installed using a set of bolts that screw into the flanges on pipes. This setup allows one side of the pipe line to be disconnected without affecting the other side. Wafer valves are narrow valves that are designed to seal against bidirectional pressure to prevent backflow.