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Old 04-12-2015, 06:28 AM   #1
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70's AS black tank sensors replace?

Ok we have our black tank pulled on our 25' 1970 trade wind. How do I test the water level sensors and or how to replace with new?



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Old 04-12-2015, 10:16 AM   #2
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Replace whole system with a Seelevel system
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Old 04-13-2015, 05:06 PM   #3
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Thanks that looks like the way to go.
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Old 07-25-2015, 05:28 AM   #4
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I called seelevel told them what I had. They told me what I needed. Price was reasonable. Great product!


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Old 07-25-2015, 11:58 AM   #5
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They have good customer service also. I called them after I received the system as my grey water tanks were 4" in depth and you could only cut down the sensors in the kit to 4 1/2". So they exchanged one sensor for one that could be cut to 4"
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Old 07-25-2015, 12:33 PM   #6
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I had asked them a while back, and they told me that 4 1/2 was the shortest they could go. (I have 2 of the 16gallon vts tanks...since I bought them, they've come out with a 5" model, and I was thinking of upgrading one of my tanks, mainly so I could use the see-level. A few more gallons of grey capacity is always welcome, too, but its secondary!
So, they must have a newer model sensor?
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Old 07-25-2015, 02:19 PM   #7
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70's AS black tank sensors replace?

I'm waiting for a flight at a airport right now so I'll get the p/n for you when I get back, but I believe you can cut the 5" down to 4" the 12" could only be cut down to 4 1/2". Maybe it was a 6"that could've cut down, I can't remember
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Old 07-26-2015, 11:12 AM   #8
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Here's the smaller sensor that can be cut to 4"

https://www.garnetinstruments.com/pr.../709js-sender/
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Old 07-26-2015, 12:42 PM   #9
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Right, I remember now. They also say that you need to leave 1/4" or so on the bottom and top of the tank wall, as the plastic gets thicker there...and the VTS tanks aren't even quite 4" (mine measure 3 7/8ths). So...that's why I was going to just go for the newer tank...maybe sell the other one on the classifieds, if anyone wants a bargain and can accept my drain/vent locations, or drill their own.
I still need the other 4"/original size vts tank for its shorter length(width?) , because my shower drain/p-trap needs to drop into the same frame bay, so I can't consume the entire space with tank.
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