Low-load ventilation butterfly valve
Features
1. The valve body adopts a steel plate welding structure, and the valve part is divided into two types according to its structure: open type and back seat type.
2. The open type has a valve seat-free structure, so the leakage is large. The back seat type adds a valve seat on the basis of the open type mechanism, so its leakage is greatly improved compared with the open type structure.
3. The valve cover is divided into two types: standard type and external bearing type. The standard type is suitable for DN500 or less, and the external bearing type is suitable for DN600 or more.
4. The structure is simple and lightweight, suitable for the flow and pressure control of air or other gases in low pressure state, and also suitable for high temperature gas.
