D71J-10 DN65 Rubber Lined Butterfly Valve

Estimated delivery : 60 Days; MOQ : 1 PCS
Valve Type : Butterfly valve
Connection : Wafer
Connection size : DN65
Category : Wafer Type Butterfly Valve
Valve body material : Carbon Steel
Seal material : Rubber lining
Working pressure (KG) : 10
Product Introduction Overview :
Main categories of butterfly valves
By driving mode
(1) Electric butterfly valve (2) Pneumatic butterfly valve (3) Hydraulic butterfly valve (4) Manual butterfly valve
According to structural form
(1) Center seal butterfly valve (2) Single eccentric seal butterfly valve (3) Double eccentric seal butterfly valve (4) Triple eccentric seal butterfly valve

Features :
Simple structure and small size. Due to its compact structure, short structure length, small size and light weight, it is suitable for large calibers.
The fluid resistance is small. When fully open, the effective flow area of ​​the valve seat channel is large, so the fluid resistance is small.
The valve is easy to open and close quickly, and has good adjustment performance. The valve can be opened and closed by rotating the butterfly plate 90 degrees. The flow rate can be controlled in stages by changing the rotation angle of the butterfly plate.
The opening and closing torque is small. Since the butterfly plates on both sides of the shaft are acted upon by the medium in basically the same way, but the torques are generated in opposite directions, opening and closing is more labor-saving.
The low-pressure sealing performance is good, and the sealing surface material is generally made of rubber and plastic, so the sealing performance is good.
Limited by the sealing ring material, the operating pressure and temperature range of the butterfly valve are relatively small.
However, the operating pressure and operating temperature range of hard-sealed butterfly valves have been greatly improved.
Before installation, check whether the butterfly valve specifications, pressure, temperature and corrosion resistance meet the use requirements.
Check whether all parts are damaged or loose.
This butterfly valve can be installed on the pipeline at any angle and should be installed in a closed position;
When welding pipeline flanges, the valve sealing port should be blocked with a plate to prevent particles and debris from damaging the sealing surface.
After welding, remove the valve, clean the valve sealing surface and the inner cavity of the pipe, and then install and fix the valve.
During installation, pay attention to the pressure direction of the valve when it is closed.
Before installation, the sealing surfaces (sealing surfaces at both ends, butterfly plate sealing surface, valve seat sealing surface) should be thoroughly cleaned to remove dust and dirt.
Before installation, the butterfly valve should be tested in an empty state. It should open and close flexibly, and the opening and closing positions should be consistent with the positions indicated by the pointer.