What are the types of manual butterfly valves

Manual butterfly valve is a kind of butterfly valve, it refers to the need for manual operation of the butterfly valve. The types of manual butterfly valves can be divided into many kinds according to different standards.

Transmission mode

Manual butterfly valve is a valve that requires human transmission to achieve opening and closing. There are two transmission modes: handle and turbine, so manual butterfly valve can be divided into handle butterfly valve and turbine butterfly valve according to the difference in transmission mode.

Connection form

Manual butterfly valves can have a variety of connection forms, different connection forms represent different types of manual butterfly valves, common connection forms are clamping, flange, wire buckle, clamp, welding these several.

Sealing surface material

The sealing surface material of manual butterfly valves is usually divided into two categories, resilient seal and metal seal. Manual resilient seal butterfly valve refers to the sealing surface material of rubber and fluorine plastic, manual metal seal butterfly valve sealing surface material is generally cemented carbide.

Structural form

The structure of the manual butterfly valve has four kinds: wafer, single eccentric, double eccentric and three eccentric. The wafer manual butterfly valve is usually a resilient seal butterfly valve, and the eccentric manual butterfly valve is a metal seal.

Working pressure

Manual butterfly valve working environment pressure is different, it can be divided into low pressure butterfly valve, medium pressure butterfly valve, high pressure butterfly valve, butterfly valve according to the different pressure and vacuum butterfly valve and super high pressure butterfly valve, but because of the manual butterfly valve itself, not suitable for use in these two working pressure environment.