GEA Nu-Con Rotary Valves
A "convey-through" rotary valve is used for more cohesive or sticky and hygroscopic powders such as cocoa powder, flour and milk powder. Fine powder substances can compact and may not flow properly from a drop-through rotary valve as they tend to stick to the inside of wedge-shaped rotor pockets.
Convey (CV) and Drop Through (DT) types are available in all models constructed in cast iron, mild steel and a range of stainless steels. Outboard bearings are standard and a full range of shaft seal options are available.
Designed for general use on pneumatic conveying systems for metering and air lock duties. Also suitable for vacuum and pressure applications on a wide variety of powders and granules. ATEX rated rotary valves are available for hazardous zones.
CT & DT Available Options:
Plastic Rotary Valve
Plastic rotors are an alternative to stainless steel rotors, which eliminates the risk of metal-to-metal contamination and can be used with GEA Nu-Con rotary valves in a variety of applications. These applications include: pneumatic conveying systems, dust collectors, cyclones, as well as hoppers for dairy, food, pharmaceutical, nutritional products and other ingredients. Plastic rotors are not suitable for all applications, so the product's temperature and valve pressure differentials are considered to assure proper sizing and clearance.
Mini Rotary Valves
Designed for pilot test plants and laboratories in chemical, dairy, pharmaceutical and powder-coating industries.
"Mini" rotary valves provide metered, gravity flow of powders and granules at very low rates, typically 1.1 lbs/minute (0.5kg/minute) or less. Applications include pilot test plants and laboratories in chemical, dairy, pharmaceutical and powder-coating industries.
Rotary Valve Options and Accessories
GEA Nu-Con has an extensive line of Rotary Valves that will work with all standard measurements as well as custom fittings. Samples options are shown below.
Custom built units can be created to suit particular applications. Please contact us for more information.
These Rotor options are also available in: Coated / Jacketed rotors, Stellite / Bevelled / Square tips and much more.
Other Rotor Options
Other Rotor Accessories
Additional safety switches/features and customized design for all types of rotary valves, rotary airlocks, blowing seals, rotary feeders and related equipment.
Rotor Detection Systems (RDS) Generation 2
The use of plastic rotors in GEA Nu-Con Demountable Rotary Valves has proven to be a sound solution for eliminating rotary valve scraping. However, plastic rotors are not suitable for all applications, for example abrasive or high temperature products require stainless steel rotors to be used. For these applications GEA Nu-Con has developed a special monitoring device to manage the potential risk of rotary valve scraping.
Specially designed for the food, dairy and pharmaceutical industries and anywhere that has to eliminate rotary valve scraping.
When fitted, the RDS continuously monitors the electrical isolation between the rotor and the valve housing giving immediate warning of any rotor contact. The Generation 2 has been specifically designed to meet the requirements of the CIP (Clean-In-Place) along with a setting for the dry out of the equipment. The re-designed RDS unit is more robust and has an ATEX compliance option.
The Generation 2 uses longer life bearings in the Rotary Valve unit and a solid stainless steel rotor that can be serviced. Generation1 RDS and or Rotary Valves, such as the Convey Through or Drop Through demountable valves, without RDS can be easily retro-fitted.
Confirms valve rotor is running free after reassembly and commissioning online.
Generation 2 Rotary Detection System Features:
Generation 1 & 2 Rotary Detection System Features
Easy Slide Rotor Support
For sanitary rotary valves and hygienic powder conveying systems, it is often necessary to de-mount and clean the rotary valve and airlock rotors. When the rotary valve is removed for cleaning, the Easy-Slide Rotor Support helps to maintain precise alignment with the rotor components.
The Easy-Slide Rotor Support is an optional accessory for all GEA Nu-Con demountable Convey and Drop-Through rotary valves used in hygienic and sanitary applications. It safely supports the rotor and non-drive endplate when removed from the valve bore, and keeps them precisely aligned, making it easier to reassemble the parts.
The rotor and endplate are mounted to a hinged, slide-rod carriage assembly which is supported by precision linear bearings.
The Endplate by itself, or complete rotor and endplate assembly can be removed without tools and in one operation. It then can be turned to one side to access all of the product-contact surfaces.
The unique design simplifies inspection, cleaning and maintenance. It's ideal for applications where the valve requires frequent dismantling or when the valve is not easily accessible.
Demountable Rotary Valves
Rotary valves designed to enable quick dismantling without tools, and are ideal for sanitary and hygienic applications.
Quick demounting without tools allows access to all product contact areas, for frequent cleaning. ATEX rated rotary valves are available for use in hazardous zones.
Convey and Drop Through rotary valves, airlocks and blowing seals are available in the full range of GEA Nu-Con rotary valves. Specifications range from non-sanitary to pharmaceutical grades, including USDA 3A dairy accepted models, in all materials.
Demountable Rotary Valve Options
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