In this type of valves, the solid particles are retained by the sleeve which is particularly resistant to abrasion and corrosion, thus without losses. 
ENFORCEMENT OF VALVES: 
Different types of command, manual drive with handwheel, pneumatic cylinder for command to simple or double effect. 
The optimal solution for abrasive, corrosive, granules, slurries and powders.

The pinch valve series OV-M has a manually operated by handwheel.
Opening / Closing: DN 15-50mm: single acting, DN 65-250mm: double effect.

The pinch valves series mechanical OV-PNC is a normally closed valve, where the air control opens the passage. The DN goes from 15 to 50 in the version with a single cylinder. In the version with two cylinders must be the DN 65-200.

Mechanical pinch valves Series OV - POC type sleeve valves are pneumatically operated. This valve is normally open. The pneumatic pilot valve closes while another pneumatic piloting, once the first is stopped, opens the valve. The version with a single pneumatic cylinder has DN 15 to 50mm. The version with two pneumatic cylinders has DN 65 to 250mm.