Rotary Valve RV – RVR

Product catalog summary

Overview: The RV and RVR rotary valves are designed for controlled feeding or discharging of powdered or granular products from various systems such as silos, hoppers, and pneumatic conveying systems. They are suitable for both gravity feeding and pneumatic conveying, ensuring high filling efficiency and precise metering.

Specifications:

Inlet Dimensions: Round (150-300 mm) and Square (150x150 mm to 300x300 mm).
Capacity: 2 to 20 litres/rev (0.07 to 0.7 cu ft/rev).
Temperature Range: -40°C to 150°C.
Pressure Range: -0.5 bar to +0.3 bar.
Materials: Cast Iron, 304 Stainless Steel, 316 Stainless Steel (RV only).

ATEX Certification: The RV-RVR valves are ATEX certified for zones 20/22, providing explosion protection up to 1.2 bar. They are suitable for use in potentially explosive zones and comply with Directive 94/9/EC and 1999/92/EC.

Operating Conditions:

Ambient Temperature: -10°C to +40°C.
Process Temperature: -20°C to +60°C.
Atmospheric Pressure: 0.8 to 1.1 bar.
Maximum Rotor Speed: 30 rpm.
Minimum Ignition Energy: >10 mJ.

Design Features:

Drive options include bare shaft direct drive, mechanical variable speed, chain transmission, and direct pre-torque gear box drive.
Rotors are available in chrome-plated, stainless steel, nickel-plated, and Teflon-coated versions for different material handling needs.
Accessories include rotation indicators, partial-rotor kits, and air purged seals.

Applications: The valves are used under dust filters, cyclones, product separators, and in pneumatic conveying and dosing systems.

Benefits: The RV-RVR valves offer a sturdy compact structure, easy access to internal parts, and compatibility with WAM® standard flange drilling. They are available in ATEX 20/22 versions with flame and explosion proof protection devices.

Catalog excerpts

BULK SOLIDS FEEDING

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High filling efficiency and precise metering in gravity feeding and pneumatic conveying of products in powder and granules. RV and RVR drop through Rotary Valves are designed according to a criteria of maximum applicative universality, suitable for controlled feeding or discharging of products in powder or granular form, from silos, hoppers, pneumatic conveying system, filters or cyclones. Round Inlet Diameter: 150 mm (6”) – 200 mm (8”) – 250 mm (10”) - 300 mm (12 in) Square Inlet Dimension: 150x150 mm – 200x200 mm – 250x250 mm – 300x300 mm (6”x6” – 8”x8” – 10”x10” – 12”x12”) Capacity: 2 – 5...

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DRIVE UNIT Bare Shaft Mechanic Variable Speed (from 4 to 20 rpm) Direct Pre-Torque Gear Box Drive (10 rpm)

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EXTERNAL HOUSING Internally Chrome-Plated Used for abrasive material Completely Nickel-Plated Used for corrosive material or as a substitute of the Stainless Steel for food application when accepted. The Rotor and the Side Flange are also completely Nickel-Plated Internally Teflon-Coated Used for sticky material The Rotor and the Side Flange are also completely Teflon-Coated Completely 304 Stainless Steel Casted used for food application. The Rotor and the Side Flanges are also made from 304 Stainless Steel. Also available in 316 Stainless Steel for the RV only Standard Version Chamfered Rotor...

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Benefits Square or round inlet flanges; Round Flange bolt pattern according to DIN 2576 PN10; Possibility of complete compatibility with WAM® standard of flange drilling on inlet and outlet; Sturdy compact structure; Drive unit mounted directly on shaft without further bearing assembly or coupling; Easy access to internal mechanical parts; Various materials and treatments available depending on material handled; ATEX 20/22 version available; Flame Proof and Explosion Proof Protection Devices certification available. Accessories Vulkollan Spring Steel Inlet for Granular Material Rotation Indicator...

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