AVK Control Valves

AVK diaphragm-operated control valves are the safe choice for water, networks across Southern Africa. Designed in accordance with EN 1074-5, they deliver network stability, precise regulation, easy maintenance, and long-lasting durability ensuring reliable performance even in the region’s toughest operating environments.

Unique Design Features of AVK Control Valves

• Network stability: Built to handle fluctuating pressures and flow conditions common in Southern Africa’s infrastructure.
• Accurate regulation: Ensures consistent water distribution and efficient system performance.
• Easy maintenance: Modular design allows quick servicing, reducing downtime and operational costs.
• Long durability: Engineered with high-quality materials to withstand harsh mining and industrial environments.
• Compliance with EN 1074-5: Guarantees safety and performance standards, adapted to local requirements.

AVK control valves' unique design features 

AVK control valves are the safe choice offering accurate regulation, easy maintenance and long durability: 

• All non-coated metal parts of stainless steel AISI 316 as standard
• Fusion bonded GSK approved epoxy coating (300 micron) 
• AVK's own drinking water approved rubber compounds
• Modular pilot system enables easy fitting to other applications without replacing the valve
• Adjustment of regulating speed for full control
• Parabolic plug design provides precise regulation and stability at low flow
• Large diaphragm secures fast reaction to minor changes in pressure
• Lifted seat prevents damage inside the valve body due to cavitation
• AVK design and manufacture with 100% pressure test and 10-year warranty
• Control valve with patented modular pilot system

The modular design with interchangeable parts offers great flexibility as the pilot system is easily altered to fit other or multiple applications without replacing the valve. The pilot system consists of three main components: 

• The distribution block (1) connects the pilot system to the main valve. As a unique feature, it offers adjustment of regulating speed for full control, easily adjusted using standard tooling, and giving full control e.g. in situations, where water hammer may occur.
• The filter (2) features high capacity and easy maintenance. When using the optional flush valve it also offers easy access to cleaning, while the valve is in operation.
• The hydraulic control block (3) can be set up for different applications. It features easy hand adjustment of the balanced pilot valve which is capable of very precise settings.