What is butterfly valve used for?
A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow. A butterfly valve has a disc which is mounted on a rotating shaft. When the butterfly valve is fully closed, the disk completely blocks the line.
What is difference between ball valve and butterfly valve?
Butterfly valves typically operate at a lower pressure (less than 50 bar) and temperature (less than 250 degrees Celsius). Flow regulation: Both valve types can be used for on/off control and proportional control, but ball valves are typically used for proportional due to better flow regulation.
How many types of butterfly valves are there?
There are 3 main categories of butterfly valves: Rubber-lined, Plastic-lined, and Metal.
What are the two body styles of butterfly valves?
Butterfly valves are popular because of their low-profile designs. They are thin, usually taking up much less space in a pipeline than ball valves. The difference in the two main variations of butterfly valves is how they attach to the pipeline. These body styles are lug and wafer style.
What kind of material is a butterfly valve?
Valtorc’s butterfly valves provide an economical solution to flow control with their bi-directional service. Our butterfly valves are available in various materials, such as stainless steel , carbon steel , PVC , ductile iron and aluminum.
What kind of lug handle does butterfly valve use?
NIBCO LD-2000 Series 2-1/2 in. Ductile Iron EPDM Gear Operator Handle Butterfly Valve FNW® HP Series 8 in. High Performance Stainless Steel Lug-Style Butterfly Valve with RPTFE Seat and Gear Operator Handle Mueller Company Lineseal III® 12 in. Cast Iron Buna-N Wheel Handle Butterfly Valve
What are the sizes of AWWA butterfly valves?
General use AWWA (American Water Works Act) butterfly valve series available in sizes 3″ through 24″ in a double flanged, mechanical join styles. 150PSIG, 250PSIG working pressure; bi-directional design with 304 or 316 stainless steel. Epoxy coated ductile iron with 304 or 316 stainless steel disc.
Can a butterfly valve be used for hot water?
The valve is ideal for commercial and some light industrial process applications, including HVAC and vacuum services, in addition to hot and cold potable water. The NIBCO® lug type butterfly valve provides bi-directional dead-end service without a downstream flange, and bubble-tight shutoff at 200 PSI.
