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c3 heater core shut off

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Old Oct 7, 2019 | 02:25 PM
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Default c3 heater core shut off

Have a regular plumbing outside water shut off but the antifreeze eats threw the rubber hose has any one tried a in line prestone antifreeze filler in line service valve? What else might be used?
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Old Oct 7, 2019 | 02:30 PM
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four seasons makes shut off valves designed specifically for a car coolant system.

something like this;
https://www.amazon.com/gp/product/B000DCNGLK/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B000DCNGLK/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
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Old Oct 7, 2019 | 03:12 PM
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an inexpensive, imported, 1/4-turn, ball valve w/ a stainless steel ball ... under $10

like so
https://www.amazon.com/Stainless-Steel-Valve-Rotary-Pieces/dp/B07FTGFGF9/ref=sr_1_9?keywords=ball+valve+1%2F2+stainless&qid=1570475250&sr=8-9 https://www.amazon.com/Stainless-Steel-Valve-Rotary-Pieces/dp/B07FTGFGF9/ref=sr_1_9?keywords=ball+valve+1%2F2+stainless&qid=1570475250&sr=8-9
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Old Oct 7, 2019 | 04:58 PM
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Does the 8407 use existing heater hose size?
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Old Oct 7, 2019 | 05:06 PM
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#84707
I have that same unit. Found it at my local NAPA. Counter person asked if I wanted 3/4" or 5/8". I got the larger for the hose going to the heater core.

Some of those shut-offs look like they belong on a gas kitchen stove or a washing machine. Get something that looks "automotive".

Last edited by HeadsU.P.; Oct 7, 2019 at 05:09 PM.
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Old Oct 7, 2019 | 08:16 PM
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Yes the one I posted up is available at advance auto. Yes it fits right into the heater hose. I cut mine about 6” before the heater core and spliced the valve in. Installed it with the handle down and it’s barely noticeable. I don’t ever use my heat anyway.
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Old Oct 8, 2019 | 07:05 AM
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Thanks tiger joe!
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Old Oct 8, 2019 | 08:36 AM
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Originally Posted by Tiger Joe
Yes the one I posted up is available at advance auto. Yes it fits right into the heater hose. I cut mine about 6” before the heater core and spliced the valve in. Installed it with the handle down and it’s barely noticeable. I don’t ever use my heat anyway.
Yup, that's a good unit. I open mine half way in the spring & fall for defrosting, close in the summer.
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Old Oct 8, 2019 | 11:57 AM
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Originally Posted by fake
Does the 8407 use existing heater hose size?
The 84707 fits the 3/4" return line from the core
The 84706 fits the 5/8" feed line to the core
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Old Oct 8, 2019 | 04:28 PM
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a little bird whispered in my ear ... there's a nuclear-certified valve tech in our midst.
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Old Oct 8, 2019 | 04:40 PM
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I removed my hoses and plugged the ports. Don't drive it in the winter.
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Old Oct 8, 2019 | 06:12 PM
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Just loop it around during the summer, put some caps on the heater nipples! Just don’t get weird with caps on nipples, at least on here!
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Old Oct 8, 2019 | 09:51 PM
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just thinking out loud,

has anybody ever put in two 12v electric solenoid valves, 1 in each hose, and connected them to the heater controls or a hidden on/off switch?

i have 1 of those 4 way ford ranger heater tap/valves in mine, but have not run the push/pull cable into the cabin yet....

i hate the voices in my head sometimes.........

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Old Oct 9, 2019 | 07:22 AM
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Thanks Melwff i have the 3/4 and advance has it if you order it
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Old Oct 9, 2019 | 09:25 AM
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Originally Posted by riverracer au
just thinking out loud,

has anybody ever put in two 12v electric solenoid valves, 1 in each hose, and connected them to the heater controls or a hidden on/off switch?

i have 1 of those 4 way ford ranger heater tap/valves in mine, but have not run the push/pull cable into the cabin yet....

i hate the voices in my head sometimes.........

I just dont think there is any reason to over complicate it. generally, its either hot enough you dont need the heat, or cool enough you do. takes 10 seconds to pop the hood and open the valve when you need it
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