Proudly the original and most reliable ProDV Dome Valves
Comprehensive design features
- Wide range of valve sizes: 50mm (2”) to 750mm (30”)
- 10 bar design pressure as standard
- Can handle material temperatures up to +480ºC (896ºF)
- Forms pressure-tight seal when closed
- Inflatable seal leakage detection system to check correct operation every cycle
- Simple, fully proven, and reliable design
- Low maintenance
- Suitable for vacuum applications
The operating efficiency of many material handling systems relies upon the original ProDV Dome Valve, currently installed in over 10,000 applications worldwide. Simple in design and low in maintenance, this high-performance valve is used throughout many industries.
Product advantages
- Full bore unobstructed material flow
- Can cut through moving and some static columns of material
- Designs can be provided for pressures up to 35 bar (507 psi)
- Up to 3,000,000 cycles between major overhauls with most materials/applications
- Fast operating function • Extremely quick seal replacement
- Long operating life
- Manufactured in accordance with European Pressure Vessel Directive 2014/68/EU, BS EN 13445, BS EN 14460, BS EN 1127, and BS EN 12516
- Can be provided with ATEX certification for use in explosive environments
Industry applications
The ProDV Dome Valve is suited to applications in a wide range of industries from metals and minerals to plastics, food, and pharmaceuticals. It is capable of cutting through flowing material and some static columns, the valve handles abrasive, cohesive, fine, and dry products with equal ease.
Typical applications include
- Pressure vessel: inlet valve, outlet valve, vent valve
- Precipitator dust collection outlet valve
- Blast furnace dust collection outlet ‘dustcatcher’ valves
- Conveying pipe: isolation valve
- Diverter pipe: line switching valve
- Outlet to screw feeders
- Outlet to silos
- Isolating valve to reactor vessels
- Lock hopper system valves
High reliability with minimal maintenance
The ProDV Dome Valve has a simple, cavity-free construction designed to minimise material build-up within the valve body. The same, simple design philosophy makes preventative routine maintenance and replacement of parts, quick and easy.
The range of materials that can be handled include
In action, the Qlar ProDV Dome Valve is a pressure-tight compressed air-operated valve, capable of returning over one million maintenance-free cycles, even in abrasive, hazardous, or toxic applications. The fast-closing cut-off valve incorporates a unique inflatable sealing mechanism. This provides the pressure-tight seal, against the dome surface when in the closed position – ensuring reliable, instant control and efficient performance.
Unrestricted full-bore material flow is assured through the unique design of the ‘dome’ assembly. A mere quarter turn is sufficient to move from the fully closed to the fully open position. This action positions the dome completely clear of the material flow path. From fine abrasive powders to cohesive materials user options extend to the choice of ‘Dome’,both in terms of raw material and any surface coatings required.
The Dome is usually produced from Cast Iron, S G Iron, or Stainless Steel, but other materials and designs will be considered based on the application.
From high-temperature Ash to foodstuffs a range of inflatable seals are available, depending upon the application. The choice includes a white food-grade seal as well as those specially formulated for high temperatures or other hostile applications. Moving and static column cut-off ProDV Dome Valves are capable of handling fine-grain materials and hard abrasive products.
Vane Actuator Models can cut through static columns of material up to 2mm in particle size. They can also cut through moving columns of powders, pastes, and granular products like coal above 2mm. Cylinder Actuator models have the added capability of being able to cut through static columns of material above 2mm.
High-temperature applications
Water-cooled ProDV Dome Valve options
Water-cooled ProDV Dome Valve options are recommended for applications involving temperatures over 200 °C. Water-cooled valves are available in selective sizes throughout the range.
Tailor-made ProDV Dome Valves
Are you unable to find what you are looking for? Qlar Pneumatic Conveying UK Ltd can design and build bespoke ProDV Dome Valves to suit your need.
Please click on the following links to order your spare parts or use our configurator to configure your complete valves. Alternatively, contact us for more information.
Videos
Cement Mixing and Blending with MULTICOR
Lime Injection into Electric Arc Furnace
Video Dome Valve: working principle
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