Application
DT, DR Rotary Valves are used as Volumetric Feeders for dry free-flowing
powder materials for pneumatic conveying systems and as dischargers
or metering valves below silos and hoppers in the chemical, petrochemical,
plastics, food, pharmaceutical, cement industries and in all industrial
fields where a highly-efficient valve is required.
Size
Available in six standard sizes: 4, 6, 8, 10, 12,16.
Flange connections
DT version Square flanges
DR version Round flanges DIN2501 PN10
Pressure range
Up to 1bar pressure differential.
Temperature
Handled material temperature up to 120°C.
Construction Materials
• Housing and end plates
Cast iron, stainless steel, aluminium
• Rotor
Carbon steel, stainless steel, hardened steel or teflon replaceable
blade or blade tips
• Internal surface treatments
Nickel-plating, chrome-plating, anti-adhesive surface
• Packing
PTFE, graphite
• End plate O-ring
NBR, Silicone for food industry
Rotor
8 (standard), 10 or 12 vanes open or shrouded end, fabricated construction
and bevelled edge; open or shrouded end partially filled; open or shrouded
end with replaceable blade or blade tips.
Drive
Chain drive with helical gearmotor (DTC version), direct with worm gearmotor
(DTM version).
Special versions
DR Version with ANSI150 flanges.
Valves with easy removable rotor for fast cleaning
(DTS, DRS version).
Features
1 Shaft with key
Extra heavy-duty to decrease flexion and to provide maximum torque.
2 Out-board mounted sealed ball bearings, maintenance free
The ball bearings are provided with high quality grease.
No re-greasing required.
External bearings prevent the material from entering into the bearing.
3 Packing glands or air purge seal
The shaft seal is with PTFE or graphite packing glands.
Labyrinth ring and air purge connection on request.
4 Cast iron, stainless steel or aluminium end plates
NBR or Silicone End plate O-ring for food industry.
For shrouded end rotor valves, drilled hole in both end plates for flushing
out the space between the ends of the rotor and end plates.
5 8 (standard), 10 or 12 vanes open or shrouded end rotor, fabricated
construction, bevelled edge and machined to close tolerance.
6 The housing is designed to obtain low leakage and
high filling efficiency.
Large air integral vent opening for special operating conditions.
