Lawn sprinkler system pressure reducer settings?

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When you find reduced water pressure in one or more of your lawn sprinkler system heads, or when you find soggy areas of your lawn that don't seem to dry out, these can be signs of a leak in your sprinkler system. You will need to locate the pipe or sprinkler head that is leaking, and repair it. To repair such a leak in your sprinkler system, follow the 4 steps below.

Things You'll Need:

Replacement pipe and fittings Shovel Stainless hose clamp Gripping pliers Hacksaw or plastic pipe cutter PVC primer and cement Screwdriver

Step 1 - Determining if a Leak Exists

Chances are good that if you have a small leak, the only way you'll know it exists is when you find a reduction in pressure at sprinkler system heads when the system is turned on. Or, you'll find excess water somewhere in your system. If, for example, your system pipes are running close to the foundation of your home, and if you were to see underground water leaking through your home's...

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Lawn sprinkler installation takes careful planning and basic knowledge of plumbing. Many manufacturers offer irrigation systems that allow you to connect components to create a customized layout for your lawn. While you can lay sprinklers in your lawn anytime, the ideal time is before you lay sod because you don’t disturb the grass. Before you begin, have a licensed plumber connect a pressure reducer and backflow valve on the waterline you intend you use. Many municipalities require this as part of their building codes.

Measure the lawn, garden and flowerbeds you plan to irrigate. Create a scale drawing on graph paper. Divide the property into zones based on the watering needs of the plants. Follow manufacturer’s guidelines for the amount of watering space each sprinkler head can cover as you determine where to place sprinkler heads. Typically, place spray sprinklers no more than 18 feet apart and rotor sprinklers no more than 35 feet apart. Don’t overlap spray patterns;...

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Slide the crimp ring onto each pipe and insert the barb fitting (Step 8).

STEP 8: Slide a crimp ring onto each pipe and insert the barb fitting.

Slide the rings in place and crimp them tight with the pliers (Step 9).

STEP 9: Draw the crimp rings together with crimp-ring pliers.

Installing the Heads

The sprinkler heads can be connected to the pipes in several ways. If drainage is not a problem, the simplest method is to install a 90-degree ell with a barb fitting on one end and a female thread on the other (Step 10).

STEP 10: If drainage isn't required, use a 90-degree ell at the sprinkler head. Thread a riser into the top of the ell.

If you're at a low spot and need seasonal drainage, install a 90-degree drain ell instead (Step 11).

STEP 11: To drain a low spot under a sprinkler head, use a 90-degree drain ell. Install it upright, with the threads at the top.

From there, you can connect a head to...

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I have the same problem, but there's really no answer for mine since I'm in a rental home (military housing), but I just thought I'd chime in all the same.

When I confronted a housing maintenance guy about the low water pressure problem when watering the lawn with my impulse sprinklers, which is even worse when water's running elsewhere, he told me it was normal & to look for low-pressure sprinklers.

After posting here about such I had my suspicions confirmed that the guy was feeding me a load of BS. I decided to ask around some more anyhow & checked out Home Depot, Lowe's, Target, Shopko & the Base Exchange & I think the average was 60 PSI to get impulse & oscillating types to run at maximum output, if it was even listed!

The problem lies therein, you see, with no water running elsewhere the approximate PSI/burst on the back of the house is 39/200-plus & the approximate PSI/burst on the side of the house is 36/168. Of course this goes down when water runs...

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About Copper Fittings

Copper pipe fittings have a variety of applications ranging from hot and cold water plumbing to hydronic heating and many others, in residential, commercial and industrial settings.

Types of connections in copper plumbing fittings

Male sweat, Street and "Ftg"

- all refer to a connection equal in size to a copper pipe. If a copper sweat fitting has any of the above in its description, it can be soldered inside a regular female sweat copper fitting.

Female sweat, SWT and "C" refer to a copper female sweat connection. A female sweat fitting accepts the equivalent of the copper pipe, which is "Street", "Ftg" or male sweat.

Male or Female NPT (MNPT or FNPT), MIP or FIP threaded are often simply referred to as Male or Female threaded and indicate that a copper pipe fitting has external (MNPT) or internal (FNPT) threads and can be connected to an equally threaded fitting or pipe respectively.

Copper fitting...

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