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Water heater relief valve

Engines, Electric, Plumbing, etc.

Moderator: Jeremyvmd

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Malcolm
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Home Port: Mill Bay, B.C. Canada

Water heater relief valve

Post by Malcolm »

Has any one replaced the water heater relief valve on a Seaward heater? When the engine gets to temperature the valve opens and gets water ever where. Is the valve a crew in or otherwise? I'm new to the site and I have looked but there seems to be nothing specific to the valve replacement. Thanks,
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Tree
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Re: Water heater relief valve

Post by Tree »

Yes, I have.

The pressure relief valve is 150 psi (about 11 bar) and you can replace it without the need to remove the calorifier.

I replaced mine with a 6 bar valve and it works just fine.
Fisher Price 2
Hull Number AUL28489L900
Yanmar 6LP-STE
Built in Portsmouth RI, USA - Berthed in Portsmouth Hampshire, United Kingdom.
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RobS
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Re: Water heater relief valve

Post by RobS »

Do a search with the word relief and me as author, you will find more reading
Rob S.
"TENACIOUS"
1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's

(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408

Luck is the residue of good design.
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DougSea
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Re: Water heater relief valve

Post by DougSea »

Try this thread:

viewtopic.php?f=7&t=6770
Doug
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2006 35TE Convertible, Volvo D6-370's
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Tree
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Re: Water heater relief valve

Post by Tree »

DougSea wrote:Try this thread:

viewtopic.php?f=7&t=6770

Good call!

I knew Rob had helped me out at some point with this but didn't bother to look and see if I was the OP on the thread.

Anyway, it's still working almost a year later!
Fisher Price 2
Hull Number AUL28489L900
Yanmar 6LP-STE
Built in Portsmouth RI, USA - Berthed in Portsmouth Hampshire, United Kingdom.
jleonard
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Re: Water heater relief valve

Post by jleonard »

To me that looks like a standard Home Depot/Lowes/Hardware store relief valve. That's what I have used in the past on my Raritan heaters.
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1983 40 Albin trunk cabin
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RobS
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Re: Water heater relief valve

Post by RobS »

jleonard wrote:To me that looks like a standard Home Depot/Lowes/Hardware store relief valve. That's what I have used in the past on my Raritan heaters.
Yup, picked it up at plumbing supply
Rob S.
"TENACIOUS"
1974 Chris Craft 36' Commander Tournament
Cummins 6BTA 330B's

(Former Owner)
"TOY-RIFIC" 2000 28TE, 6LP, Hull 408

Luck is the residue of good design.
Malcolm
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Home Port: Mill Bay, B.C. Canada

Re: Water heater relief valve

Post by Malcolm »

Did some further web cruising. The factory part was $29. With the temperature and pressure you need both or risk a blevy. Pretty cheap fix. Thanks every one.
halfmoon
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Re: Water heater relief valve

Post by halfmoon »

The standard relief valve for home water heaters is 3/4"NPT. The 6 gallon heater on my 2000 28 uses a 1/2" valve which may have to be found at an RV supply store or on line.
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