We have compiled this sprinkler installation manual of helpful hints and tricks of the trade to help you in completing your irrigation installation projects without a lot of unnecessary time delays and/or cost expenditures. This installation manual will help you learn how to install sprinklers and sprinkler systems. We hope you find it helpful. Table of Contents
Gluing Pipe and Fittings
Make sure all surfaces that are to be glued are clean and dry. Apply Primer to both surfaces thoroughly and evenly. Generously apply glue to both surfaces, quickly pushing them together while twisting (about a quarter of a turn.) The glue will dry in a few seconds, but will not reach its full strength for about 24 hours.
Apply thread sealant (teflon tape only) on the male threads, twisting the fittings together until they are finger tight–not hand tight. Tighten the fittings one to two turns more to seal the joint completely. Over tightening can easily break the fitting. Most manufacturers recommend not using pipe dope–and will even cancel their warranties if you do.
Drains should be installed at the lowest points of each lateral line. Install them at a 45 degree downward angle to allow for proper drainage. With drains, “more is better.” They will save time, trouble, and added expense later.
Flushing the System
Fushing the system is very important; it clears the pipes of foreign debris that will clog the system and cause problems later. Before installing the valves, flush the mainline thoroughly by turning on your stop & waste. (Make sure that dirty water can not re-enter the mainline.) Before installing the drains and sprinkler heads, flush all lateral lines by turning on the valves manually.
Installing Sprinkler Heads
Be certain to install the plastic screens in each sprinkler head before you attach the nozzle; they help to prevent clogging and affecting the sprinkler performance. (Some manufacturers pre-install the screens for you–please check.)
Protect the wires between the controller and valves from damage by attaching the wire to the underneath side of the mainline, or by running it through conduit. This will save you time and money in the future. Use tape to secure the wire in place.
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