You are not logged in.

Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

1

Monday, August 2nd 2010, 8:47am

Low-Head Drainage???

What is it?

What part of the sprinkler does the water leak out of?

How does a check valve stop it?
Промывать Стратегически

HooKooDooKu

Supreme Member

2

Tuesday, August 3rd 2010, 9:01am

Sprinkler heads are not sealed closed when they are in the "off" position. So if your system is installed on a hill, when the water is turned off, the water left in the pipes will drain out through the lowest installed sprinkler head.

A check valve keeps the water from flowing backwards through the pipes, and there is even special check valves that can even hold upto about 10psi to keep water from flowing through it in either direction (until the forward pressure exceeds the 10psi). Basically, these check valves function to prevent the water remaining in the pipes from draining out of the system when the valve is off.

Rate this thread