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.