Check Valve worht it?

[bheron]

If I drill in one or two 1/8" holes in my return line just below the water surface, should I still get a Check Valve?
I hear they reall slow down the flow (GHP). Is there any type that's better than the others?

 

[tony detroit]

Swing is better than spring type as far as backpressure.
Swing must be mounted horizontally to be effective though.

 

[broomer5]

Some folks use check valves - some don't.
I'm one that does not.
Check valves have moving parts within.
They need to be cleaned periodically or they may stick.
A drilled hole in the return must also be maintained - or at least checked often for possible clogs.
It's easier to check the vent hole than to clean a check valve.
I vote no on the check valve and go with the 1/8" holes

 

[bheron]

Thanks!
I'll go with the drilled holes and test ie enough to make me confortable. And then clean it.