A first valveelement may be positioned within the first port and a fluid director may be positioned within the connecting portion.
第一阀门元件可定位在第一端口中，并且导流器可定位在连接部分中。
2
This welding machine is used for welding parts in applications of valveelement, in-out water pipe fittings at end covers of solar water heaters, automobile and motorcycle manufactures.
Hydraulic counterbalance valve is a key element in the hydraulic balanced loop, which is applied abroad in modern engineering mechanism especially in elevating machinery.