Adding a vacuum gauge

Titanium

LifeTime Supporter
Jun 26, 2007
441
SF Bay Area
After reading mas985's great posts on hydraulics, I am interested in adding a vacuum gauge to the suction side of my pool piping. I have done some searching on this site, but can't find the posts that told how to add the vacuum gauge to the PVC piping. Was it just as simple as "Drill and Tap"?

Also, any ideas where to find a vacuum gauge? The local hardware store just stocks pressure gauges.

Thanks!

Titanium
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
You can get an automotive vacuum gauge for around $20 from many different places. I'm not sure how they hold up long term, but they work quite well for short term use.

There are many different ways to attach a vacuum gauge. Using one of the drain plug holes on the pump is usually a fairly simple approach.

A flow rate meter costs a little more, typically a bit under $100, but gives a more directly usable number in my opinion.
 

Titanium

LifeTime Supporter
Jun 26, 2007
441
SF Bay Area
JasonLion,

A flowmeter also sounds like a good idea.

Do you have a flowmeter installed for your pool? Do you have pictures or a link of what type/brand of flowmeter?

Thanks!

Titanium
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
The Blue-White F-300 series works well and is affordable. You need 14 times the pipe diamiter of straight pipe to install them (21" for 1 1/2" pipe, 28" for 2" pipe) and there are different models for horizontal, vertical flow up, and vertical flow down. They are available from various sources for $60 to $100, for examaple AquaNet.Net (horizontal only). Installation is easy, drill a hole in the pipe and clamp it on.