Ball valve water controller
This is an irrigation valve which controls water by means of rotating the ball with a hole through its center. Ball valves operate in a manner that, when the hole is made symmetrical or aligned with the water flow, the water flows freely through the valve.
When the ball is rotated so that the hole is not aligned, the flow is completely shut off. Ball valves are used primarily as isolation valves. They tend to be very reliable and trouble-free and they tend to require more effort to turn on and off than other valves but for the larger size pipes, butterfly valves are usually used rather than ball valves.
Majority of the ball valves have arrows indicating the direction of movement i.e. on and off shut offs. These are indicated in clockwise and anti-clockwise directions.
Ball valve sizes
Ball valves are made of plastic of high density and they come in various sizes. The available sizes are:
- 20 millimeters nominal diameter or ½ inch.
- 25 millimeters nominal diameter or ¾ inch
- 32 millimeters nominal diameter or 1 inch
- 40 millimeters nominal diameter or 1 ¼ inches
- 50 millimeters nominal diameter or 1 ½ inches
- 63 millimeters nominal diameter or 2 inches
- 75 millimeters nominal diameter or 2 ½ inches
- 90 millimeters nominal diameter or 3 inches
How to connect ball valves to the irrigation systems
These valves may come of different forms depending with the type of the fixing ends. The fixing ends are either plain, internally or externally threaded ends. So it is very important to consider the type of the pipes or irrigation tool you are going to use.
Choose the valve according to the size of your system related to the sizes listed above. When internal threaded ball valve is considered, take the male adaptors or PVC valve sockets to fix to the ends. Tighten the ball valve to avoid leakages.