Wafer Valves

Wafer shut-off and control valves are known as butterfly valves, primarily due to the shape of the mounting structure, which resembles butterfly wings. They are used for closing pipelines or regulating flow.

Wafer or butterfly valves have wide applications in industry. They can be used in the paper, chemical, or food industries, or for transporting bulk materials.

Wafer valves are also widely used in water management – particularly in the distribution of drinking and utility water. Valves can be found in cold and hot water systems for heating or cooling.

Individual products differ in nominal pipe diameter DN (i.e., connection size) and maximum operating pressure, the material used for the butterfly valve, as well as the number of bolts and the design of their holes (through/threaded), with the number of bolts being directly proportional to the operating pressure. As the name suggests, the installation of valves always takes place between the pipe flanges.

When selecting wafer valves, it is important to know that the material of the butterfly and the seal relates to the type of medium required and its temperature. For example, wafer valves made of ductile iron with epoxy coating are intended for water, wafer valves made of brass are used for gas. Another common material is a stainless steel butterfly valve, which is particularly suitable for applications with drinking water.

The wafer valve for water Belimo D6200W is made of stainless steel, making it suitable for water and water with glycol additives up to a maximum of 50%. It can therefore be used in stationary heating, ventilation, and air conditioning systems.

Wafer valves are operated by a manual lever (for closing) or a worm gear. However, they can also be connected to an electric actuator and a single-acting or double-acting pneumatic actuator.

Bola.cz offers suitable adapters for operation using an actuator. Pneumatic actuators fit on butterfly valves even without an adapter. More convenient operation with an actuator – Bola.cz offers products from the proven manufacturer Belimo – will certainly be appreciated by customers, especially for less accessible valves. Additionally, the actuator can be integrated into the control of the entire measurement and regulation system.