General ball valves do not indicate direction and can be installed casually. In principle, ball valves have no direction, but in actual installation, in order to prevent excessive leakage between the valve body and the valve cover, the valve body is usually connected to the direction of the tank or material. Some ball valves have directionality and are generally marked on the ball valve, which cannot achieve good sealing when installed upside down.

When installing ball valves, attention should be paid to the installation direction: there are two types of ball valves: one-way sealed ball valves and two-way sealed ball valves. The former has directionality, but if installed in the wrong direction, it cannot guarantee sealing under full pressure difference, while the latter has no directionality. Structurally, there are two types of seals: bidirectional seals generally have no flow direction requirements, while unidirectional seals have flow direction requirements.

If it is a manual ball valve, there is no direction, but if it is a control valve, there is direction. V-shaped ball valves and eccentric hemispherical valves all have directional characteristics and are generally labeled with medium flow direction markings on the valve body. Floating ball valves and fixed ball valves are bidirectional, while eccentric hemisphere valves, V-shaped ball valves, and lift stem track ball valves are unidirectional.

Do I need to pay attention to the installation direction when installing ball valves?

There are two types of ball valves: O-type ball valves and V-type ball valves. The O-type ball valve adopts a floating structure, with a precision casting core and a hard chromium plated surface. The valve seat is made of reinforced polytetrafluoroethylene material, with the same diameter as the pipeline. The flow capacity * is large, the flow resistance * is small, and there is no leakage when closing. It is generally used as an on/off valve, especially suitable for high viscosity, fiber containing, and granular media; The V-shaped ball valve adopts a fixed structure, with a V-shaped notch on the ball core, which can achieve proportional adjustment and has a flow characteristic of approximately equal percentage. The medium flows towards the valve body.