Extensive range of butterfly valves

AVK offers one of the widest ranges of butterfly valves at the market that includes centric butterfly valves with fixed liner, loose liner as well as double eccentric butterfly valves. And of course, we offer a wide variety of material configurations for each of these types as well as any type of actuation. This means that we most probably can supply the right valve for your application within water supply, wastewater treatment, fire protection and gas supply.

AVK has been in the valve business for more than 50 years. From the 90s we started offering butterfly valves from Wouter Witzel, a well-esteemed manufacturer of centric fixed liner butterfly valves founded in 1966 in the Netherlands and since 2005 a member of the AVK Group. The same year we introduced a brand new range of AVK double eccentric butterfly valves, and in 2010 InterApp Armaturen Holding AG became part of the AVK Group. InterApp was founded in 1969 and is a well reputed manufacturer of centric loose liner butterfly valves produced in Switzerland and Spain. 

Centric butterfly valve with fixed liner

Fixed liner butterfly valves can be used under vacuum conditions as there is no movement and wear of the liner. Furthermore, the fixed liner valve is suitable for high flow velocities and high operating cycles e.g. open/close every few seconds. Fixed liner butterfly valves are typically used above ground, but the double flanged types are also suitable for below ground installations. Available for water, wastewater, gas, fire protection and industry applications. Read more about centric butterfly valves with fixed liner

Centric butterfly valve with loose liner

Loose liner butterfly valves are typically a cost-effective solution for applications above ground where replacement and maintenance is relatively easy. The liner is replaceable without a full replacement of the valve and the design gives more options for different liner materials. Available for water, wastewater and industry applications. Read more about centric butterfly valves with loose liner 

Double eccentric butterfly valve

Double eccentric butterfly valves are most often used in water supply applications below ground as an alternative to gate valves. When installing butterfly valves below ground a lower bury depth is required and typically they are more cost-effective, especially in the large dimensions, compared to gate valves. They can of course also be used above ground. Read more about double eccentric butterfly valves 

Triple-offset butterfly valve

Triple-offset butterfly valves are made of high grade materials making them suitable for use in high demand applications where extraordinary corrosion and heat resistance is required. Suitable for industrial applications.

Product insights

What is a butterfly valve

A butterfly valve is a shut-off valve with a relatively simple construction. In closed position, the disc blocks the valve bore while in open position, the disc is turned to allow flow. A quarter turn takes the valve from fully open to fully closed position, or opposite, and thus the butterfly valve allows for quick opening and closure.

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