CVB - Model BFL Series -Concentric Rubber Lined Butterfly Valves

FromCVB Valves S.R.L.

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CVB BFL series valves feature a concentric disc. These valves are designed to meet with most industrial applications, from powder conveyance to petrochemical requirements.. The valves are manufactured in four different versions with sizes from DN 40 to DN1000, pressures up to 25 bar and many different materials. CVB BFL can be produced double flanged up to DN 2600

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Rubber lined butterfly valves found a wider application tanks to their well proven reliability and their advantages
compared to conventional valves.
CVB rubber lined butterfly valves, especially find application in many dfferent industrial sectors either as shut-off and control valves for various type of fluids. Their design can meet requirements in the iron and steel, oil and gas, chimical, ship building, textile, food and beverage, water treatment, HVAC, etc..

Compact size and light weight
Elastomer seat with internal metallic support ring which ensures geometric and dimensional stability as well as easy replacement without using tools in the event of accidental breakage.
The rubber seat(elastomer) protects the valve body from the fluid and with the disc are the sole components directly in contact with the fluid, therefore there is no need to use special materials for the valve body.
The seat partially covers the valve body sides thanks to its special shape and therefore allows the installation on the pipe line without any additional gasket.
The disc is self-centering thanks to the floating coupling on the stem and to its lenticular shape. It rapresents an excellent means for minimizing pressure drops across the valve.
The accurate machining of the disc edge ensures tight shut-off with operating pressures from 10 ~3 Torr up to 21,5 bar positive, through an appropriate interference fit with the elastomer seat.
Rubber lined butterfly valves represent an ideal shut-off solution for operating pressures from vacuum up to over 20 bar, while they can match operating temperatures depending on the type of elastomer material.