Rotary valves (cast)

also suitable for pneumatic conveying systems

Rotary valves (cast)

Rotary valves
Basic design

  • Suitable for use in pneumatic conveying systems
  • various types of rotors
  • Tight tolerances
  • Good tightness
  • made of  in cast iron or stainless steel AISI316
  • with direct drive or chain drive incl. chain guard

Types of rotary valves in cast design

Drop through rotary valve type VPS

Drop through rotary valve type VPR

Drop through rotary valve type RS

Blow through rotary valve type SF

Rotary valve type UPR

Technical data for rotary valve type VPS

The drop through rotary valve type “VPS” has been studied and manufactured for the feeding and unloading of any kind of product in grains or powder. It is used in pneumatic conveying lines, mounted under a cyclone or at the fi lter exhaust. Manufactured in cast iron, nickel / chromium plated cast iron or stainless steel AISI316.

Thanks to its low tolerances and several type of rotors, it can fit any type of product or special requirement of the customer. The valve is available with gearmotor or chain drive with chain guard according to CE rules.

Type VPS   VPS180 VPS230 VPS270 VPS300 VPS350 VPS400
Inlet mm Ø 120 Ø 150 Ø 180 Ø 220 Ø 300 Ø 350
Outlet mm 150 x 120 185 x 148 242 x 180 266 x 218 360 x 250 400 x 320
Height mm 245 310 340 382 470 527
Capacity vol. l/U 2 4.5 8 12 25 40
Number of rotor blades 6 8 8 8 8 8
Speed rpm 32 32 31 32 31 30
Power kW 0.37 0.37 0.55 0.75 1.1 1.5
Weight without drive kg 30 46 72 90 167 215
Weight with chain drive approx. kg 53 70 110 130 240 285
Max differential of pressure bar 0.25 0.25 0.25 0.25 0.25 0.25

Recommended filling depending on product flow properties

Speed < 10 rpm 11 - 20 rpm 21 - 30 rpm >30 rpm
Free flowing 90% 80% 70% 60%
Flowing 80% 70% 60% 50%
Poorly flowing 70% 60% 50% 40%
Very poorly flowing 60% 50% 40% 35%

Technical data for rotary valve type VPR

The drop through rotary valve type “VPR” is born like a synthesis of the “VPS” valves /having the same body) and the “RS”. It is particularly suitable for the feeding and pneumatic conveying of products in grain and powder and it can be used in all industrial sectors involving pneumatic conveying lines with average / low pressure.

For the particular construction and the minimum tolerances, it ensures excellent airlock and good fl owing of the product. The characteristic circular fl ange allows an easy interlock with feeding bins. Manufactured in cast iron, nickel / chromium plated cast iron or stainless steel AISI316, it is supplied with bare shaft or motorization consisting in variable speed gearmotor or gearmotor and complete drive with chain guard according to CE rules.

Type VPR   VPR180 VPR230 VPR270 VPR300 VPR350 VPR400
Inlet mm Ø 120 Ø 150 Ø 180 Ø 220 Ø 300 Ø 350
Outlet mm 150 x 120 185 x 148 242 x 180 266 x 218 360 x 250 400 x 320
Height mm 245 310 340 382 470 527
Capacity vol. l/U 3 6 11 17 30 45
Number of rotor blades 8 8 8 8 8 10
Speed rpm 32 31 32 32 31 34
Power kW 0.37 0.55 0.75 1.1 1.5 2.2
Weight without drive kg 31 51 76 95 167 218
Weight with chain drive approx. kg 61 82 113 158 244 295
Max differential of pressure bar 1 1 1 1 1 1

Recommended filling depending on product flow properties

Speed < 10 rpm 11 - 20 rpm 21 - 30 rpm >30 rpm
Free flowing 90% 80% 70% 60%
Flowing 80% 70% 60% 50%
Poorly flowing 70% 60% 50% 40%
Very poorly flowing 60% 50% 40% 35%

Technical data for rotary valve type RS

The drop through rotary valve type “RS” is particularly suitable for the feeding and pneumatic conveying of products in grain and powder and it can be used in all industrial sectors involving pneumatic conveying lines with average / low pressure. For the particular construction the several type of rotors and the minimum tolerances, it ensures excellent airlock and good fl owing of the product in pneumatic conveying lines.

This valve has been studied to fi t any type of product or special requirement of the customer. Manufactured in cast iron, nickel / chromium plated cast iron or stainless steel AISI316, it is supplied with bare shaft or motorization consisting in variable speed gearmotor or gearmotor and complete drive with chain guard according to CE rules.

Type RS   RS180 RS230 RS270 RS300 RS350 RS450
Inlet mm 190 x 118 238 x 135 276 x 148 340 x 198 470 x 238 570 x 285
Outlet mm 190 x 118 235 x 135 276 x 158 340 x 198 476 x 220 570 x 285
Height mm 270 330 390 447 530 677
Capacity vol. l/U 4 8 12 20 40 80
Number of rotor baldes   8 8 8 8 10 10
Speed rpm 32 31 32 31 30 30
Power kW 0.37 0.55 0.75 1.1 1.5 2.2
Weight without drive kg 38 55 95 130 238 465
Weight with chaindrive approx. kg 67 97 135 190 318 575
Max differential of pressure bar 1 1 1 1 1 1

Recommended filling depending on product flow properties

Speed < 10 rpm 11 - 20 rpm 21 - 30 rpm >30 rpm
Free flowing 90% 80% 70% 60%
Flowing 80% 70% 60% 50%
Poorly flowing 70% 60% 50% 40%
Very poorly flowing 60% 50% 40% 35%

Technical data for rotary valve type SF

The blow through rotary valve type “SF” is particularly suitable for the feeding and pneumatic conveying of products in grain and powder and it can be used in all industrial sectors involving pneumatic conveying lines with average / low pressure. For the particular construction the several type of rotors and the minimum tolerances, it ensures excellent airlock and good fl owing of the product in pneumatic conveying lines.

This valve has been studied to fi t any type of product or special requirement of the customer. Manufactured in cast iron, nickel / chromium plated cast iron or stainless steel AISI316, it is equipped with fl ange connections on both sides and it is available with bare shaft or motorization consisting in variable speed gearmotor or gearmotor and complete drive with chain guard according to CE rules.

Type SF   SF180 SF230 SF270 SF300 SF350 SF450
Inlet mm 190 x 118 238 x 135 276 x 148 340 x 198 470 x 238 570 x 285
Clear blow-through diameter mm 54 65 74 96 118 150
Height mm 270 330 390 447 530 677
Capacity l/U 4 8 12 20 40 80
Number of rotor blades 8 8 8 8 10 10
Speed rpm 32 31 32 31 30 30
Power kW 0.37 0.55 0.75 1.1 1.5 2.2
Weight without drive kg 42 65 100 145 255 490
Weight with chain drive approx. kg 70 96 139 205 335 600
Max differential of pressure bar 1 1 1 1 1 1

Recommended filling depending on product flow properties

Speed < 10 rpm 11 - 20 rpm 21 - 30 rpm >30 rpm
Free flowing 90% 80% 70% 60%
Flowing 80% 70% 60% 50%
Poorly flowing 70% 60% 50% 40%
Very poorly flowing 60% 50% 40% 35%

Technical data for rotary valve type UPR

The "UPR" rotary valve is particularly suitable for the dosing and pneumatic transportation of granular, flaky or ground products. Thanks to its sturdy construction and flanging unified according to UNI PN10 standards (DIN 2576 ND10) or ANSII50 standards it is particularly suitable for use in both heavy industry and in the chemical and plastic industrial fields.

The special confirmation of the entrance inlet and a series of other technical adaptations reduce the risk of the pinching of the product between the blade and stator in cases in which particularly different products need to be discharged. The external bearing slots and the packing PTFE packing gland sealing system, provide further guarantees of rational performance and also make it possible to use the valve at high temperatures.

Type UPR   UPR200 UPR250 UPR300
Inlet Ø mm 200 250 300
Outlet Ø mm 200 250 300
Height mm 400 500 580
Capacity vol. l/U 8 18 38
Number of rotor blades   10 10 10
Speed rpm as required as required as required
Power kW as required as required as required
Weight without drive kg 110 180 230
Weight with chain drive approx. kg 165 240 334
Max differential of pressure bar 1 1 1

Recommended filling depending on product flow properties

Speed < 10 rpm 11 - 20 rpm 21 - 30 rpm >30 rpm
Free flowing 90% 80% 70% 60%
Flowing 80% 70% 60% 50%
Poorly flowing 70% 60% 50% 40%
Very poorly flowing 60% 50% 40% 35%

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Tags: Air technologyBlow through rotary valvesDedustingPneumatic conveyingRotary valvesValve for discharge

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