New Stenner Pump Install

[DigitalOcean]

I just installed my first Stenner pump yesterday. Everything is connected correctly (to my knowledge) and I have the injector connected to a Tee downstream from my pump (Right before the water enters back into the pool.)

I do not have any liquid chlorine in my 15 gallon drum just yet. I wanted to make sure I didn't have any leaks with my pool equipment first from where I added the Tee for the injector, so I started my pool pump and there are no leaks!! Wahoo!

However, I noticed water was pushing from the pool's return line up the injection tube. (The Stenner pump was not running at this point, hence no pressure was on the injection line) The water stopped at the stenner pump and did not make it through the pump and back into the drum. Which is a good thing.

I though the injector fitting had a check valve where this wouldn't happen though? Maybe I missed it somewhere?

 

[Flying Tivo]

No need for check valves, the stenner pump uses rollers to pinch the tubing and create flow(chlorine). This knowledge is good to keep on the back of your mind, if you see reverse flow then you know to change the rollers or tubing on the stenner, but that is a few years from now. If you have not yet filled the chlorine drum, you can test with water your flow setting so you know how many mL or Oz per minute. This will give you a good starting point for you pool size and chlorine demand.

Felipe

 

[gary300]

Whether or not you have a check valve depends on the model of Stenner pump you have. 25 PSI pumps do not have a check valve. 100 PSI pumps do have a check valve. The rollers pinching against the pump tube provide the main seal against water being pushed back into pump housing. The check valve does not seem to me to be 100% effective at sealing, but would prevent a large amount of water entering the equipment pad should the feed tube from the Stenner pump break at some point.

I love my Stenner and have been using it for years. Really nice when I go on vacation and do not have to worry about chlorination.

The Stenner is very reliable IF you change the pump tube at least once a year. Each six months I check the injector to make sure it is not being clogged and change the duckbill (check valve). I also check the pickup filter for clogging. Every couple of years, I change out all of the tubing.

I have never had a failure or leak doing the above.