Butterfly Valves VFS

Product catalog summary

Description: VFS Butterfly Valves are designed for use in powdery and granular material processing plants, facilitating the interception of gravity-fed or pneumatically conveyed dry materials. They are commonly installed beneath hoppers, bins, silos, and conveyors, or used to intercept pneumatic conveying ducts. The valves are constructed from high-pressure die-cast aluminum alloy semi-bodies, with a stainless steel or cast iron swivel disc and a pre-stressed elastomer or integral seal.

Applications: These valves are widely used in storage, transport, and processing lines for dry materials. They are particularly effective in closing bins, hoppers, and silos containing powders or granular materials.

Function: VFS Butterfly Valves provide a cost-effective and efficient solution due to their special design and engineering materials. They are mass-produced with features that allow versatile use.

Benefits: Key benefits include no contamination due to the metal steel disc and NBR white seal, dust-tight design, suitability for different materials, safety certification for ATEX zone 22, quick integration into processes, modular design for easy maintenance, and high flexibility with interchangeable components.

Technical Features / Performance: The V1FS model features a top flange and beaded bottom section for flexible sleeve attachment, while the V2FS model has identical top and bottom flanges. Both models support sizes from 100 to 400 mm (4 to 16 inches), are pressure-proof up to 0.2 bar (2.9 psi), and can withstand temperatures up to 100°C (212°F). The disc is available in SINT® FDA-approved engineering polymer or stainless steel, with white seals for standard or no-contact applications. The design ensures no stagnation points and allows for interchangeable discs.

Dimensions: Detailed dimensions are provided for both V1FS and V2FS models, including specifications for external grooves, drilling, and component sizes.

Catalog excerpts

Animal Feed Milling Butterfly Valves VFS 6 Description VFS Butterfly Valves consist of two high-pressure die-cast semi-bodies manufactured from aluminium alloy, a swivel disc made of stainless steel or cast iron, and a pre-stressed elastomer seal or integral seal. While V1FS has a top flange and a beaded bottom section suitable for the attachment of a flexible sleeve, the V2FS comes with an identical top and bottom flange. Applications VFS Butterfly Valves are used in all types of powdery and granular material processing plants where interception of gravity-fed or pneumatically conveyed dry materials is required. Typical applications are storage, transport and processing lines. They are fitted beneath hoppers, bins, silos, screw or other type conveyors, or to intercept pneumatic conveying ducts. Due to their special design and to the engineering materials used, they represent a particularly costeffective yet most efficient solution. No contamination due to metal steel disc and NBR white seal; Dust-tight thanks to components geometry; Suitable for different materials in the same configuration; Safety for OEM and End User thanks to ATEX zone 22 certifcation; Quick integration into the process; Modular design and easy maintenance thanks to small numbers of components; High flexibility thanks to interchangeable components. For closing bins, hoppers and silos containing powders or granular materials, VFS Butterfly Valves are among the most widely used equipment worldwide. What used to be custom-built items for specific applications, have been turned by WAM® into a mass-produced industrial product with features that allow extremely versatile use. Rights reserved to modify technical specification

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Animal Feed MillingButterfly Valves VFS Technical Features / Performance ▼ ► V1FS with top flange and beaded bottom section suitable for fixing of flexible sleeve from 100 ~ 400 mm (4 ~ 16 in) ► V2FS with identical top and bottom flange from 100 ~ 400 mm (4 ~ 16 in) ► Pressure-proof up to 0.2 bar (2.9 psi) and max. temperature T = 100°C (212°F) ► Disc in SINT® FDA-approved engineering polymer or stainless steel ► Absence of stagnation points ► White seals for standard or no-contact-with-material applications ► Interchangeable discs DS.220.VFS.EN.March2012.R00 Rights reserved to modify technical...

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