which antifreeze for plastic traps..winterizing

Kal Row

Kal Row

which antifreeze for plastic traps..winterizing tnx

kevin coppinger_4

you canuse...

propylene glycol diluted or you can use windshied washing fluid straight...kpc

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hr

Use RV antifreeze

which is probably a weak PG mix without any inhibitors. it is designed for this purpose.

I thought I read that PG and EG hydronic glycols are not compatiable with PVC, but I can't put my hands on that info.

I know BlazeMaster CPVC fire sprinkler pipe will not allow glycols. Has to be glycerin for freeze protection.

hot rod

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Kal Row

ok i found out..

the ethylene types are not environmentally friendly and usually acidic and cant safely be used in the metal under the sink traps - whereas the propylene glycol stuff is completely non toxic, in fact it use used in some foods, and on the Hercules cryo-tek bottle there is no warning label whatsoever, – but the propylene stuff is more flammable, however the premixed Hercules cryo-tek doesn’t have a flammable label because there is enough water in it – so it’s worth the extra 3 dollars a bottle – I recommend blowing some into the water lines of the house cause its hard to guarantee that you got the water out of all the low spots, I was blowing this house, and in one of the location when I removed the air hose, air came blowing back at me, that means that I was pushing water uphill until an air gap, and when I let go, the water rolled right back down and pushed the air back at me, now that location is going to bust unless I put in antifreeze – I am going to rig a venturi setup so that I can blow the cryo-tek right in – also I am going to make shopvac adapter at the main so that I can suck and blow at the same time – (I got to get my mind out of the gutter…

hr

Glycol confusion

Both PG and EG derive from a barrel of crude. Glycol is a chemical term that generally means a molecule with two OH (hydroxyl) groups. The "cracking" method determines what you end up with.

PG is used, in food grade, as a flavor and scent enhancer and if obviously safe to injest.

Technical grade PG is blended for antifreeze and it's the stuff they put in that make it more toxic.

Hydronic PG is listed a low oral toxicity. EG as moderate. Manufactures say EG has a higher mammalian toxicity. Pets are attracted to the sweet smell and taste and will get sick or die from over consumption.

Actually EG, OH-CH2 CH2- OH is more enviromently friendly as it has two carbons and two hydroxyl groups. PG OH-CH2 CH2 CH3- OH has 3 carbons and takes longer to break down.

Airports generally squirt EG on planes as it breaks down quicker in the bio ponds and can be dumped in public sewer systems.

The difference between less expensive grades of glycols is the inhibitor package used and the ACTUAL freeze protection rate. The thinner the fluid you pour, generally the lower the protection rate for freezing. Beware of inexpensive glycols that list a -100° protection rate!

I would say any PG hydronic or RV product would work for you. I use my transfer pump and squirt straight glycol into the lines around my pool for freeze protection. Any small amount of water left in the pipes will blend with the straight solution and provide protection.

hot rod

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