winterizing liquid chlorine dispenser

[carveitup]

So I'm putting in a stenner pump and I am curious... Is there anything special you do for winterizing the system? It goes way below freezing here.

 

[tim5055]

Well, my first reaction is to look to chem geek, where he said:

The freezing point depression for 6% Sodium Hypochlorite as found in Clorox Regular and most Ultra brands of bleach is 7.3C or 13.1F so the freezing point is -7.3C or 19F.

The freezing point of full-strength Muriatic Acid (31.45% Hydrochloric Acid) is -46C (-50.8F) (for Hasa; other brands quote even lower freezing points) so unless you live in the Artic, I think you are safe to leave your Muriatic Acid outside.

I'm going to guess it gets below -7.3C or 19F in Burlington, Ontario so you will have to deal with it.

I would pull the tubing out of the pump and move it and the bleach container to a location that it won't freeze.

 

[JasonLion]

I take the pump head indoors for the winter.

 

[carveitup]

Figured as much. Thanks. It does hit -30C or so at least a couple of times each winter.