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Gravity drain type heads

Frankpc

Active Member

Posts: 40

Location: Kansas

1

Saturday, July 4th 2009, 2:17pm

Gravity drain type heads

I just read a thread that discussed the use of gravity type drains with certain types of heads. I didn't realize that some heads retain water and some do not. Since I live in a location that is subject to freezing, and I wanted to use line drains, would the following types of heads be OK?

Hunter PGB-ADJ

Hunter Institutional with check valve.... Perhaps the check valve is what retains the water(?)

Thank you!

Frank

Wet_Boots

Supreme Member

Posts: 4,102

Location: Metro NYC

2

Sunday, July 5th 2009, 1:05pm

All check-valve heads retain water.

Frankpc

Active Member

Posts: 40

Location: Kansas

3

Sunday, July 5th 2009, 2:41pm

Thanks for reply.

Are there some heads that are less likely to retain water than others?

Does that mean that if your property is somewhat slanted, you might be better off to avoid the line drains and also use heads that have check valves to keep the water in the system? Perhaps that would reduce hammering?

Frank

This post has been edited 1 times, last edit by "Frankpc" (Jul 5th 2009, 4:45pm)

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