The control valves that make up the manifold are usually globe valves. They are the same type of valves used for faucets in the house. The globe valve shut off the flow of water by pressing a soft disc against a smooth valve seat.
Control valves often have anti-siphon valves attached to them. Anti-siphon valves, also known as vacuum breakers, prevent the backflow of water into the housing supply. As a result, they are sometimes required by local ordinances and are always a good idea to include.
Each control valve controls several sprinkler heads. This group of sprinkler heads is called a circuit. Two factors control the number of circuses you need. What is the available flow rate? If too many sprinklers are turned on at one time, the water pressure drops, preventing the heads from throwing as far as they are supposed to. For proper coverage, it is best to turn on one circuit at a time.
The other factor to consider is the watering needs of different areas. For example, if a shrub bed is on the same circuit as the lawn, the shrub bed will be watered as often as the lawn, even though it does not need as much water.
Complete fertilizers are those that contain all three of the primary nutrients. Complete fertilizers require…
A high percentage of water-insoluble nitrogen means that fertilizer is less likely to burn the…
Slow-release fertilizer combines the characteristics of the organics and the soluble synthetics your lawn needs.…
The John Deere JS36 lawn mower is a great lawn mower that will meet the…
The fall is the time to consider repairing your lawn and getting it ready for…
This is our second post about types of fertilizers. Our previous post discussed organic fertilizers.…