free hd xxx,new desi bf,porn indian
Hello, this is fiona from TKFM Valve Factory, today ,let me to introduce the "butterfly valve" and "lug vs wafer butterfly valve"
Hope that through the writing of this article, we have a clearer understanding of butterfly valves and can more clearly choose
the butterfly valve we need during use.
Our stock butterfly valve products:
Butterfly Valve Characteristics
Simple structure, small size, short structure length, small size, light weight；
The operation is flexible and labor-saving, and manual, electric, pneumatic and hydraulic modes can be selected.
Easy to install；
Wafer VS Lug Buttefly Valve
1.Wafer Butterfly Valve
Installed in the diameter direction of the pipeline, rotation angle is between 0°-90°. When rotated to 90°, it is fully open.
2.Lug Butterfly Valve
Normal Nominal diameter ： DN40-DN2000 mm Drive mode ： manual worm gear
Sealing structure: soft seal ， hard seal Material cast steel, stainless steel
3. Wafer VS Butterfly Valve
The lug version of the butterfly valve's design similar 3-piece ball valve.
One side of the pipeline can be removed without affecting the operation；
Wafer valve usually has just two or four unthreaded holes to secure and
align the valve within two mating flanges.