DIAVAL® diaphragm valves: essential for the chemical industry and mining
In process engineering, operational continuity depends directly on the reliability of the components. In highly demanding sectors, DIAVAL® Diaphragm Valves have established themselves as essential solutions for chemical industry and mining projects. Their advanced design makes it possible to handle aggressive, corrosive and highly abrasive fluids in complete safety.
To respond precisely to every need on site, the DIAVAL® range is divided into two key configurations, each with very specific technical advantages:
DIAVAL® Weir Type Valves (W Series)
This configuration is specially designed for critical applications and for handling concentrated chemicals. Its main design benefits include:
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- Tight shut-off with less effort: the central weir reduces the travel of the diaphragm, ensuring an immediate tight seal without straining the mechanism.
- Flow regulation capability: its design allows the handwheel to be set at intermediate positions for precise flow control.
- Safety with aggressive chemicals.
- Prevents cross contamination.
- In-line maintenance capability: thanks to its bolted bonnet, the diaphragm can be replaced without removing the valve from the pipe, minimising downtime.
DIAVAL® Straight-Through Valves (ST Series)
This is the preferred option when extreme abrasion from solids and heavy slurries dominate the production process. It stands out for the following advantages:
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- Zero obstructions: when fully open, the body behaves like a continuous straight pipe, avoiding pressure drops or the risk of blockages with viscous fluids.
- Less abrasion wear: solids, sand and sludge flow straight through without hitting internal bends directly, extending the service life of the equipment.
- Direct mechanical cleaning: its completely straight geometry makes it easy to introduce internal cleaning systems.
- Perfect bidirectional flow: it guarantees optimum isolation performance regardless of the direction in which the fluid flows.
Optimise your plant with COMEVAL®
Selecting the right diaphragm technology makes the difference between an unplanned shutdown and a profitable process. At COMEVAL VALVE SYSTEMS we help you integrate the exact model your technical infrastructure requires. Do you have a new project under way? Contact our specialist engineers and receive advice tailored to you.