Shanghai Qigao Pump and Valve Group

D
Pneumatic flange hard-sealed butterfly valve
Widely used in petroleum, chemical, electric power, metallurgy, food, medicine, textile, papermaking and other industries. It can be installed at a temperature of ℃. The medium is gas, air, steam, water It is used to regulate flow and cut off media on industrial pipeline networks such as seawater and oil products. The driving forms include manual, worm gear transmission, pneumatic, hydraulic, electric, electro-hydraulic linkage and other actuators, which can realize remote control and automatic operation. Metal hard seal butterfly valve series products are long-life, energy-saving butterfly valves. Its structure is designed using the three-dimensional core braiding principle. The valve seat adopts a multi-layered structure compatible with hard and soft seals, and is processed with exquisite craftsmanship and advanced technology. This product consists of main components such as valve body, butterfly plate, multi-layer valve seat, valve stem, and transmission mechanism. Therefore, it is widely used in pipelines of corrosive media such as metallurgy, electric power, petroleum, chemical industry, air, gas, combustible gas, water supply and drainage.
Product Features
Pneumatic flange hard seal butterfly valve
It adopts the three-dimensional eccentric principle design to achieve an ideal spatial motion trajectory of the sealing surface. There is no friction and no interference between the sealing surfaces, plus sealing Proper selection of materials ensures the sealing, corrosion resistance, high temperature resistance and wear resistance of the butterfly valve. Its main features are as follows:
, small opening torque, flexible, convenient, labor-saving and energy-saving.
The three-dimensional braided core structure makes the butterfly plate close tighter and tighter, and its sealing performance is reliable and leak-free.
, high pressure resistance, corrosion resistance, wear resistance, long service life, etc.
Adopt standards
Design standards:-
Flange connection size:
.
.
Structural length:
Pressure test:-
Pneumatic flange hard seal butterfly valve overall dimensions
%r = dd % => Nominal
Diameter
D
% overall dimensions
% connection dimensions
%
% =>
% D/D/D/D
%
%
%> short
%> long
% >
%>
%>
%> D
%> D
%> -d
%> D
%> D< br/> %> -d
%>
%>
%>
%>
%>
%>
%> < br/> %>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
% >
%>
%>
%>
%>
%>
%>
%>
%> < br/> %>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
% >
%>
%>
%>
%>
%>
%>
%>
%> < br/> %>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
% >
%>
%>
%>
%>
%>
%>
%>
%> < br/> %>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
%>
% >
%>
%>
%>
%>
%>