Products Details

The pneumatic flanged butterfly valve is a valve used to isolate or regulate flow. Its closing mechanism adopts a disk-shaped structure, similar to the operation of a ball valve, which can be quickly closed. Butterfly valves are favored because of their lower cost, light weight and need less support. The valve disc is located in the center of the pipe and is rotated parallel or perpendicular to the direction of flow by means of a rod attached to an actuator outside the valve. Unlike ball valves, the disc is always present in the flow, so there is a pressure drop in the flow regardless of the valve position.

Technical specification
Description

The VFS butterfly valve consists of two high-pressure aluminum die-cast half-bodies, a SINT polymer composite or cast iron rotating disc and a prestressed elastic seal.
Versions available in the food industry include stainless steel plates and FDA/EN approved integral seals.
Feature

VFS butterfly valves are widely used to close silos, funnels or hoppers containing powder or particles.
They are devices used in various powder and granular material treatment plants to truncate dry material transported by gravity or by air. They are installed under hoppers, silos, silos, spirals or other types of conveyors, or are used to cut off pneumatic delivery lines. Due to their special design and the materials used, they represent a particularly economical and efficient solution.
peculiarity

The V1FS has a top flange and a bead bottom section for mounting flexible sleeves.
V2FS has the same top and bottom flanges.
Valve sizes range from 4 "to 16" with DN100-DN400 available.
Sealed against dust and pressure up to 0.2 bar (2.9 PSI).
High pressure aluminum alloy die casting half body.
Cast iron, engineered polymer or stainless steel plates.
Seals for standard or food grade applications.
Fewer components.
For powder, granule.
Lightweight and easy to operate.
advantage

High wear resistance.
Easy to install.
Maintenance saves time.
Low operation and maintenance costs.
Other types
Pneumatic fluorine lined butterfly valve

PTFE lined plate with spherical sealing surface, easy to operate, good sealing performance, long service life.
Can be used to quickly cut off or regulate flow.
The valve body adopts split type, and the sealing at both ends of the valve shaft is controlled by the fluorine rubber between the valve disc and the seat; The valve shaft is not in contact with the fluid medium in the chamber.
Widely used for liquid and gas (including steam) transportation in various industrial pipelines, suitable for severely corrosive media, such as sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine, alkali, aqua regia, etc.
Pneumatic center line butterfly valve

The center of the valve shaft is located on the center line of the valve body, and the sealing part of the valve plate and the connecting part of the valve body are flange connections.
Small fluid resistance, large effective flow area and small opening and closing torque when the large-diameter butterfly valve is fully opened. Compressed air is used to drive the valve plate to rotate 90 degrees to complete the opening and closing.
Compact structure, small operating torque, 90 degrees fast opening.
The flow characteristic is straight line and the adjustment performance is good.
The valve plate is connected to the valve stem with a pin-free structure to overcome possible internal leakage points.
The butterfly structure of the spherical valve plate improves sealing performance and extends valve life with zero pressure leakage after opening more than 50,000 times.