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Old 12-21-2016, 07:07 AM   #1
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TPMS Flow through sensors or not?

What's your preference for TPMS sensor, Flow though or Non flow through?

2004 Dutch Star 4011
Spartan Chassis
Cummins 370 HP
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Old 12-21-2016, 07:11 AM   #2
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I bought the non-flow through because of how much longer the flow through are. My sensors still stick out more than I like on my toad. I'm thinking the flow through were also heavier then the non flow through and I was concerned about balance.

I have the EEZ RV System and it's been awesome!

1998 Southwind Storm 34S
2015 Ford Focus Hatchback SE Toad
2017 Lincoln MKX (soon to toad)
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Old 12-21-2016, 07:19 AM   #3
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I took the advise of another forum member and went with the non flow through. Security is not an issue for me so I also removed the security shell so now the sensors are quite petite. If airing up is needed the sensors simply screw off the same as if the stem had a cap. I have been happy with the set up....tip of the hat to Dutch Star Don!
Bill & Kelli 2015 Dutch Star 4366
2002 Safari Zanzibar 3906
1995 Fleetwood Bounder 36JD
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Old 12-21-2016, 07:22 AM   #4
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I have eez flow through. Works great
2005 madp m4030
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Old 12-21-2016, 07:28 AM   #5
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Tend to agree--have TST caps on toad and flow-throughs on the coach. F/Ts are convenient but, at least for TST, don't seem to have as good air flow, so re-filling a low tire is slow. Heard you can slightly grind down sensor stems to adjust stem compression but didn't sound like something I would like to do--just me.....
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Old 12-21-2016, 07:33 AM   #6
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Go with the standard non-flow through caps. I tried the flow-thru caps and they kept failing... Even with the flow-through caps (if they worked properly), you'll almost certainly screw a plastic valve cap on top of that right? So why is it any harder to just remove the non-flow through style when you are adjusting tire pressure?

I also removed the "security" caps on mine so that they are easier to remove and replace without any special tools--just twist them on and off like you would a simple valve cap. I have them on my Jeep too and never remove them. Nobody seems to notice them, and the people who know what they are aren't interested in stealing them.
2013 Fleetwood Discovery 40G, Cummins ISL,Freightliner Chassis, Allison 3000.
2017 Ford F150 Lariat toad w/
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Old 12-21-2016, 08:08 AM   #7
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I have the flow thru from TST. No problems. When I do have to add air it is no more than 5# so I don't notice it taking longer than using just the valve stem.
2011 40' Monaco Cayman PBQ ISC 360
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Old 12-21-2016, 08:31 AM   #8
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I bought the "cap" type sensors because I didn't want the possibility of air leaking through the sensor!
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Old 12-21-2016, 11:18 PM   #9
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I debated the two types, but was concerned about the size/length of the Flow thru, especially on the front rims. I was afraid they might get hit by debris and break off. Probably unlikely, but was a concern of mine.

The TST units also come with a double housing. The outer housing is used to lock them on, but can be removed and left off. After seeing how they lock, they can be easily defeated, so I removed the outer housing. When I need to inflate my tires, I simply unscrew the TST unit, add air and screw it back on.

I'm not really concerned that someone is going to steal them.
Don & Mary
2019 Newmar Dutch Star 4018
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Old 12-22-2016, 06:58 AM   #10
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I bought the TST Flow Thru sensors. I didn't like the restricted air flow, and they wouldn't fit the front wheels of the coach (too long). I returned them and they sent me 6 of the cap type with the security caps removed. I then added 4 more for the Jeep GC, and removed the security caps on those as well. No leaks and no problems.

my only issue has been the SS braided valve extension on the inner duals. The sensor cant depress the needle enough to get a pressure reading. I plan to have new metal valve extensions installed this winter.
Bill & Denise
2014 Bay Star 3103 - 5 Star Tune, CHF, Magne Shade
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Old 12-22-2016, 07:03 AM   #11
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Since you don't release air from the tires with a gauge checking pressures, we found that we needed to change the tire pressure so seldom that having pass-thru sensors with their, length, weight and potential leakage not worth the consideration.
Dale & Mark Bruss
13 Years Full-Timing Now with a 2016 Bounder 33C
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Old 12-22-2016, 07:08 AM   #12
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I have the flow thru's - never an issue.
Russ - USN SWO (ret) - 2018 Dutch Star 4369 Spartan Chassis a Road Glide CVO & Dyna Switchback in an Iron horse trailer or a Jeep Unlimited
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Old 12-22-2016, 07:09 AM   #13
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I have the flow-through sensors on all coach tires. I suggest having metal valve stems rather than rubber. Adding pressure is not a problem since you usually only require a few pounds to balance out the system. The dolly and tow tires use the caps as I found them really cheap at a garage sale. I guess you could also look around the Walmart parking lot for some that are not locked. (Just Kidding, that's where you get a new drop hitch)

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Me: RETIRED: Aerobatic flight instructor, RE Broker, EE,- DW, Nan, works Finance for RV dealer. https://www.acroflyer.com/nibbler
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Old 12-22-2016, 07:09 AM   #14
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I use the smaller CAP sensors on my coach, toad, trailer, motorcycle and wife's car.l

Flow-Thru are too big too heavy and a waste of time since you have to remove a CAP anyway either to check air psi, remove or add air.

Dr4Film ----- Richard

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