In water installations, and particularly in distribution and management systems, variables need to be controlled so that consumption can be optimised through effective management. For accurate, reliable flow and pressure control we recommend using the most advanced annular control technology.

Annular valves are ideal for flow control in sizes that are usually not possible with pilot operated or self-operated control valves. They provide greater accuracy and can be operated remotely, mainly by electric or hydraulic actuators and control units integrated into the plant control system.

They have a good flow characteristic and low pressure drop, and can be fitted with anti-cavitation trim. Annular valves have a flow path guided through the trim, with the rotary stem movement transmitted by gearing into axial disc movement.

Thanks to the wide range of casting materials available, the valves can also be supplied in aluminium bronze for desalination plants or in stainless steel for acidic water, in addition to the standard ductile iron with internal and external EPOXY coatings to ensure good environmental protection.

The Comeval Valve Systems DVD series annular valve manufacturing range covers sizes up to DN 1500 with EN / ASME flanged connections and various options of construction materials and trims.

DVD brings extensive experience in designing control valves for water systems, together with broad expertise in hydraulic calculations and in recommending valves suited to your installation.

COMEVAL VALVE SYSTEMS is a company founded in 1975 and part of the international ARI ARMATUREN Group since 2011, with a complete portfolio of manual valves, control valves, air valves and anti water hammer protection devices for water systems.