Rotolok Roundhead Valves for Bulk Handling

30 July 2020

The Rotolok roundhead valves consist of a cast body and inlet flanges with an internal cast dome and inflatable seal. The castings are CNC machined to ensure that the seal is properly seated and presses uniformly against the dome when inflated. The dome is clamped to side shafts which operate within impregnated bush bearings in the body with external lubrication points. Lip seal shaft seals protect the environment against product leakage and maintain any internal pressure. 

Roundhead valves are largely used in the bulk handling field as on/off controls for powder, pellets or granules falling under gravity from one discharge point to another. They are designed to give a full bore opening in pressure applications and are particularly suited to handling abrasive products.

Rotolok products have been used for pharmaceutical handling for many years and the company offers a range of stainless steel and hygienic equipment to ensure that the highest standards of hygiene and cleanliness are met. 

Typical products handled include: Bentomite, Dicalite, Dimethylamine Salt, Gelatin, Gluten, Gontrez, Guam Gum, Gypsum, Hexamine, Iron Oxide Dust, Kaolin Clay, Mica, Potassium Nitrate, Salt, Sulphur, Zinc Oxide. 

Image credit: Rotolok Valves, Inc.