Stainless steel ball valves usually have no direction markings and can be installed at will, but in fact, in order to prevent excessive leakage between the valve body and the valve cover during installation, the valve body of the stainless steel ball valve is generally connected to the direction of the tank or material.
Stainless steel ball valves are divided into one-way seals and two-way seals. One-way seals are directional. If they are installed in reverse, they cannot guarantee sealing under full pressure differential conditions. One-way seals are non-directional.