Do I Need A Check Valve & What's That Brass Thing???

[Rebf]

We have just finished building our pool and I have a question about our equipment. Between the heat pump and the salt cell there is a brass(?) thing and a flow a flow switch. What is the brass thing? Do I need it? Also, shouldn't there be a check valve where that brass thing is? Sorry to sound vague and dense but I am really new to this.

 

[gwegan]

I am an old man that can't see. All I see is a brass blur. Could you give me a closeup.

I don't think you need a checkvalve. The SWG generates limited amounts of chlorine its unlikely to harm the heat pump.

 

[Rebf]

Here is a close up. Is that copper? brass? thing related to bonding/grounding? A green wire runs from the grass to the pump/motor to the sacrificial zinc anode then to this mystery part then to the heat pump.

 

[sargent]

That's an in-line sacrificial anode. in-line sacrifical anode, pool and spa sacrifical zinc anode

 

[JVTrain]

Yep. Anode.

Nope. Don't need a check valve there. That other fitting down stream of the anode is a flow sensor for your SWG. If it doesn't detect flow, it will shut down so it's effectively a check valve. No flow = no chlorine production to back flow into heater.

 

[Bama Rambler]

Actually I think that particular fitting is a water bonder. But, it does look like you have an anode in the line between the filter and the heat pump.
It also looks like they have the nut on that split-bolt turned around backwards.

As for the check valve, you don't really need one.

 

[Rebf]

Thank you all. Mystery solved and no need to add a valve.

 

[jblizzle]

Yeah, I think that brass bar in the bolt slot supposed to be between the wires and the nut.

 

[Rebf]

Thanks! I will get that taken care of.