Three - and four - way have an L- or T-shaped hole through the middle. The different combinations of flow are available. It is easy to see that a "T" valve can connect any pair of ports, or all three, together, but the 45 degree position which might disconnect all three leaves no margin for error. The "L" valve can connect the center port to either side port, or disconnect all three, but it cannot connect the side ports together.
Multi-Port Ball Valves with 4 ways, or more, are also commercially available, the inlet way often being orthogonal to the plane of the outlets. For special applications, such as driving air-powered motors from forward to reverse, the operation is performed by rotating a single lever four-way valve. The 4-way ball valve has two "L"-shaped ports in the ball that do not interconnect, sometimes referred as "X" port.
Manufacturing and sales facility for all products in India.
Flowchem House, Near Sukan Mall, Science City Road, Sola, Ahmedabad - 380 060, Gujarat - India.