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Air Gap and Strainer

andrewikon

New Member

Posts: 2

Location: USA

1

Thursday, April 27th 2006, 8:28am

Air Gap and Strainer

According to our village requirements along with RPZ I need to install in-line strainer
and air gap. I'm thinking about Febco 3/4" 860 RPZ model. What is the in-line strainer and what is air gap? Why do I need them? Are there any special things I have to know about them? Can I buy it with RPZ at www.sprinklerwarehouse.com or I need to go to local plumbing shop?
Thanks,
Andrew

Wet_Boots

Supreme Member

Posts: 4,102

Location: Metro NYC

2

Thursday, April 27th 2006, 1:25pm

Air gaps are for inside installs, so you can run any dribbling water into a drain line. The strainer is a form of insurance, to stop debris from messing up the works.

andrewikon

New Member

Posts: 2

Location: USA

3

Friday, April 28th 2006, 2:46am

So strainer suppose to be installed right after RPZ where pipe goes outside?
Is there need for Air Gap if my RPZ installed outside of my house?
Thanks

Wet_Boots

Supreme Member

Posts: 4,102

Location: Metro NYC

4

Friday, April 28th 2006, 3:08am

Strainer comes before the RPZ, and yes, you can get an RPZ with a brass strainer already installed on it. Personally, if I had to have a strainer, I'd special-order one with a 100 mesh screen, and really protect the RPZ (and sprinkler system, too) from any debris.

Air gaps are for connections to a drain line, and you don't have a drain line when an RPZ is installed outdoors.
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