Butterfly valves consist of a round disc or vane that is attached to a control lever or wheel, which when rotated as little as 90° will cause the disc to rotate and stand perpendicular to the flow of water through the pipes. Read More…
Butterfly Valves & Controls, Inc.Grapevine, TX | 817-421-5343
Butterfly Valves & Controls, Inc. has been a premier supplier of quality butterfly control valves and other related industrial components for 25 years. We carry only the best parts sourced from world-class butterfly valve manufacturers. Extended service life and safe operation are at the core of every valve manufactured/assembled. Our catalog includes a large selection of valves, actuators, controls, positioners, and more.$$$
Cipriani Harrison Valves CorpRancho Santa Margarita, CA | 949-589-3978
Cipriani Harrison Valves Corp designs stainless steel valves, tank top fittings, flow devices, and pipeline components for the beverage, cosmetic, and pharmaceutical industries. We have put over 4 decades of expertise into building world-renowned, ISO-certified, top-quality products.$$$
CR-TEC EngineeringMadison, CT | 203-318-9500
CR-TEC Engineering is a supplier of a broad range of valve products for fluid handling. Our specialty is automated valves using pneumatic or electric actuators. However, we also supply any of our valves in manually operated versions, with hand levers or hand wheel gearboxes. We are capable of assisting our customers with system design recommendations and will help in the valve selection process.$$$
Lumaco Sanitary ValvesHackensack, NJ | 800-735-8258
For over 40 years, Lumaco has been manufacturing sanitary valves, ball valves, steam valves, high pressure valves, stainless steel valves, brass valves and actuated valves. We serve a range of industries, including pharmaceutical, cosmetics and food, and offer shipping within 24 hours.$$$
Valve Solutions, Inc.Alpharetta, GA | 770-740-0800
When it comes to butterfly valves, you don’t need to look anywhere but here! We have been producing excellent quality valves since we first opened our doors. All of our products are put through extensive rigorous testing before leaving our state of the art facility to further ensure 100% quality assurance! Allow us to show you the difference when you work with true professionals! Contact us via telephone or email or check out our website today!$$$
AWWA butterfly valves are made out of ductile or cast iron with stainless steel or rubber seating and all materials, coatings and lubricants must be suitable for use with drinking water. According to AWWA C504, the section that sets standards for butterfly valves that will be used in water pipes, the valves should be bubble tight and able to shutoff completely. Flanges must be used to install AWWA butterfly valves.
These valves must be carefully regulated because they come into contact with water and, while some of that water is wastewater or water that is not yet potable, the valves must be as sanitary and safe as possible. The materials help prevent rust from forming and contaminating the water. AWWA butterfly valves are used in any circumstance in which water may be ingested. AWWA valves are always readily operable because they are precisely machined to prevent sticking, a characteristic that is very attractive.
AWWA butterfly valves are standard valves; unlike high performance or triple offset butterfly valves, the disc is flat and centered. When the valve is open, the disc turns within its mounting so that it lays parallel to the direction of the pipe and the flow of water. The thickness of the disk does not pose much of an obstruction for the current. The lever control outside of the pipe may be manually or automatically operated to open and close the valve.
Torque limitations and ratings identify how much power is required to close the valve without making it over tight, so that the stem is not damaged. Most lever controlled butterfly valves are quarter turn valves. AWWA butterfly valves, however, are usually operated by a hand wheel that must be completely rotated at least once.
This allows the valve to be opened in increments to better control the water flow, thereby controlling how much water flows through the pipes and at what speed. Also, unlike ball valves that trap small volumes of liquid inside them when they close, butterfly valves completely seal out all water. There is no space in which water can become trapped and AWWA butterfly seals provide a 100% seal.