Way over two million units operating worldwide

With way over a million units operating worldwide, WAM VFS-type Butterfly Valves for powdery and granular materials represent one of the Group's most industrial products.

VFS Butterfly Valves consist of two high-pressure aluminium alloy die-cast semi-bodies, a SINT polymer composite or cast iron swivel disc, and a pre-stressed elastomer seal.

For the food industry a version with stainless steel disc and an FDA/EN-approved, integral seal is available. While V1FS has a top flange and beaded bottom section – suitable for the attachment of a flexible sleeve – V2FS comes with identical top and bottom flange.

Function :

• To close silos, hoppers or bins containing powders or granules, VFS Butterfly Valves range among the most widely used equipment worldwide.
• What used to be custom-built items for specific applications, WAM has turned into a mass-produced, industrial product with features that allow extremely versatile use.
• VFS Butterfly Valves are used in all types of powder and granular material processing plants where interception of gravity-fed or pneumatically conveyed dry materials is required.
• They are fitted beneath hoppers, bins, silos, screw or other type conveyors, or to intercept pneumatic conveying ducts. Due to their special design and engineering materials used, they represent a particularly cost-effective yet most efficient solution.

Features :

• V1FS with top flange and beaded bottom section suitable for fixing a flexible sleeve
• V2FS with identical top and bottom flange
• Dust tight and pressure-proof up to 0.2 bar (2.9 PSI)
• High-pressure, aluminium alloy die-cast semi-bodies
• Disc in cast iron, SINT engineering polymer, or stainless steel
• Seals for standard or food-grade applications
• Made up of few components
• Used for powders, granules
• Lightweight and easy to handle

Benefits :

• Highly abrasion-resistant
• Easy to fit
• Time-saving maintenance
• Low operating and maintenance costs
• Interchangeable discs
• Ex-stock delivery