Is there a direction for ball valve installation?

General ball valves are not labeled direction, can be installed at random. From the reasoning of the ball valve is no direction, but the actual installation in order to prevent leakage between the valve body and bonnet leakage is too large, usually the ball valve valve body is generally connected with the direction of the tank or material to come. Some ball valves are directional, generally labeled on the ball valve, an inverted can not achieve a good seal. Ball valves are divided into one-way sealing ball valves and two-way sealing ball valves, the former has a directional, if the installation of the reverse can not guarantee the seal under full differential pressure, while the latter does not have directionality. From the structure of the two-way sealing and one-way sealing: two-way sealing is generally no flow direction requirements, one-way sealing has flow direction requirements. If it is a manual ball valve is no direction, but if it is a control valve is the direction of the V-ball valve, eccentric half-ball valves are directional, generally labeled in the body of the valve medium flow direction sign. Floating ball ball valves, fixed ball ball valves are bi-directional, eccentric half ball valves, V-ball valves, poppet orbital ball valves are unidirectional. Ball valves have O-type ball valves and V-type ball valves, O-type ball valves with floating structure, the ball core is precision casting, hard chrome plating on the outside, the seat of the reinforced PTFE material, the flow channel with the same caliber of the pipeline, the flow capacity of a great, very small flow resistance, no leakage when closed, generally used as a switching valve, especially for high-viscosity, fiber-containing, granular media; V-type ball valves with a fixed structure, the core has a V-shaped cut-out, can be used as a switching valve; V-type ball valves with a fixed structure, the core has a V-shaped cut-out, which can be used as a switching valve. V-type ball valve with fixed structure, the ball core has a V-shaped cut, can realize proportional adjustment, flow characteristics for the approximate percentage. Its media flow in the valve body. As a user, the general O-type ball valves are used for switching, basically two-way sealing, so can not direction requirements; V-type ball valves are used to do control, are generally unidirectional sealing, direction requirements. Actual use, may be each supply product features are not the same, just need to see whether the valve body flow direction indication, such as no, it is a bidirectional seal, no installation direction requirements. If there is, then you need to install its instructions to install to achieve a good sealing effect.