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Old 04-08-2021, 03:01 PM   #1
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Flow through or cap sensors

Which type of TPMS sensors should I purchase? Flow through or cap? Thanks for your answers. TGillis
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Old 04-08-2021, 03:25 PM   #2
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The cap sensors make the most sense for me. They are smaller, lighter than the flow thru, and I only add air a couple of times per year, so no big deal to unscrew it when I add air. I also throw away the “anti-theft” part, which also makes the actual part on the valve stem even smaller and lighter.

They look just like caps on the valves, no problems with theft .....
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Old 04-08-2021, 03:56 PM   #3
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I used the Cap sensors originally on my TST system but changed over to the Flow Thru..I found it much easier & quicker to get to my desired inflation point. My only regret...not doing it sooner!!
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Old 04-08-2021, 06:21 PM   #4
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Flow through or cap sensors

Flow thru require solid “metal / brass” valve stems where the cap style can be rubber. I have flow thru on the coach and the cap style on the towed.
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Old 04-08-2021, 06:42 PM   #5
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I looked at both. The cap sensors are smaller and lighter But I travel from cold Minnesota in the spring to very hot mexico within about a weeks time. 100 PSI in 32 degree Minnesota very quickly becomes 125 PSI in Arizona. I left Oct 19 heading south and each day I had take some air out. When I got into Mexico, In two days travel I stopped 3 times each day to lower pressure. So it is really a matter of how you use them. I would like the smaller sensors but find if more convenient with the pass through. And yes, I guess I could take cap sensors off to do that, as I have to take the valve caps off anyway. This just seems easier.
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Old 04-08-2021, 07:54 PM   #6
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A lot depends on your style of wheel...is it going on a toad, 19.5 or 22.5 aluminum. I found the flow thru stuck out way to far on the front wheels of my coach (22.5 aluminum). I was afraid it would clip something.

As stated, you only really need to remove them once or twice a year to add air. It only takes a moment to remove them.
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Old 04-08-2021, 09:57 PM   #7
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Quote:
Originally Posted by pasdad1 View Post
The cap sensors make the most sense for me. They are smaller, lighter than the flow thru, and I only add air a couple of times per year, so no big deal to unscrew it when I add air. I also throw away the “anti-theft” part, which also makes the actual part on the valve stem even smaller and lighter.

They look just like caps on the valves, no problems with theft .....


Concur. Exactly what I did with my EZZ Tire sensors. And my toad I take them off upon returning home. Don't trust the dealer service apprentice not to screw them up or loose one.
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Old 04-09-2021, 11:23 AM   #8
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I went with the cap sensors to eliminate the possibility of air leakage!
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Old 04-09-2021, 03:33 PM   #9
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We use cap sensors and remove them when we put it in storage.
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