The manual butterfly valve primarily consists of a frame, gate, screw, nut, and other components. This valve features a simple structure, flexible operation, lightweight, no sticking, and fast shutoff. It is particularly suitable for conveying and regulating the flow of various non-viscous solids, powders, and granular and crystal materials smaller than 10 mm in diameter. The manual one-way spiral gate allows for installation at any angle. It is easy to operate and allows for instant adjustment of the opening. It offers low fluid resistance and requires minimal torque for opening and closing. When fully open, the sealing surface is less susceptible to erosion by the working medium than a globe valve. Its simple structure and excellent manufacturing processability make it a highly manufacturable process.

Working principle: When the hand wheel of the manual butterfly valve is turned clockwise, the valve stem drives the valve stem nut, and the gate slowly rises to fully open, otherwise it is open.

Manual butterfly valves are widely used in metallurgy, mining, building materials, and grain. They are typically used in conjunction with star-shaped dischargers, but can also be used independently. The diameter of the manual butterfly valve matches the discharger’s inlet and is available in square or round shapes.

Features of manual butterfly valve:

①The manual butterfly valve is installed on the pressurized pipelines of various powdery and granular materials to open and close. Its operating pressure can reach 1MPa.

②The manual butterfly valve has the characteristics of good sealing and no internal or external leakage, and the parts prone to wear are made of high-quality materials. At the same time, the structure of the valve fully considers the characteristics of powder and granular materials.

③The manual butterfly valve has a simple structure, flexible operation, light weight, no obstruction, and is particularly suitable for the transportation and flow adjustment of various solid materials and block and lumpy materials of about 50mm. The installation is not limited by the angle, the operation is convenient, and it can be adjusted at any time.