[C320-list] Hot Water Heater Cold Water Line - Check Valve

[Paul Rickman]

OK, went to the boat today and to West Marine.  For those of you who care or may have this
same problem.

In the West Marine Catelog:

The part that failed looks like (but not the same) Whale Plastic Check Valve on page 352.

I was going for the Bronze Check valve Groco CV50 on page 352 but it was not in stock.
I would have had to get a double ended pipe threaded niple and a short blue Whale 15 MM
tube to make this work, but doable.

I decided to look around in the Kent Island West Marine plumbing section -- unknown to the
manager, she had a Whale In-line Non-return valve WX1582. It is 15 MM. Inserted this into
the adapter WX1532, it locked and could not be pulled out. So I took the part and put it on
my boat, a quick exchange. The quick connect end of WX1532 is also 15 MM. See page 348.

There is only one slight problem, the Whale part is rated for 150 degrees. We all know that
boat hot water heaters run at 180 degrees. 

Hopefully this is the end of this story. Thanks to all who replied to my request. 

By the way, the manager there is usually very helpful -- today she called three other non-marine stores
looking for parts that would work for this situation.

Paul
Affinity 657
Bay Bridge Marina




________________________________
From: Jack Fitzgibbon <chuters at earthlink.net>
To: C320-List at Catalina320.com
Sent: Wednesday, September 2, 2009 8:55:57 PM
Subject: Re: [C320-list] Hot Water Heater Cold Water Line - Check Valve

Paul,

Yes, there should be a check valve in the cold water supply line.  Whale makes a QC check valve but I use Sea Tec fittings.  Here is a link to their catalog:  http://www.seatechinc.com/default.asp.  I also used a Sea Tech threaded brass quick fitting to connect the cold water supply line to the hot water heater.  I had two all nylon cold water supply line fittings fail where the fitting  threads engage the threaded hole of the water heater, completely hidden from view.  Replaced with the brass QC fitting.  In any case.  Check this catalog out.

jack
s/v Wetted Bliss
#441







-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com]On Behalf Of Paul
Rickman
Sent: Wednesday, September 02, 2009 7:23 PM
To: C320-List at Catalina320.com
Subject: [C320-list] Hot Water Heater Cold Water Line - Check Valve


A few days ago, I put out a question about the Whale Quick Connect fitting and a back flow preventor
on the cold water line right next to the hot water heater. I didn't get any answer. So lets try this:

Does the cold water line require a "check valve"? Will a check valve prevent the hot water from flowing
back into the cold water line? Does anyone know what people use for a check valve, if any, in the cold water
line? Check valve = back flow preventor. 

I'm going out to some of my local boat supply stores tomorrow to check on plumbing supplies.

Thanks,
Paul
Affinity 657
Baby Bridge Marina