The other forum I posted on had the general consensus of "by the time it reaches the tube it's cooled down enough that you dont need tubes with 400+ degree operating temps". But 150F is far below 400+, and I definitely would not be surprised if it reaches those temperatures considering how hot the whip gets.
I've used tubing from 7th Floor for years. It's pretty much the same as every other OEM vaporizer tubing. If you think that tubing is exposed to heat close to 400 degrees, I suggest you get a meat thermometer and measure the temp about 6" above a stover burner set on medium. If you're determined to make a heat issue out of tubing, just get some silicone tubing. It's rated up to 400 degrees.
vapefiend Reviewed by vapefiend on . Worried - Are stock DBV/7th Floor tubes safe? I've posted this on another forum, and they seemed to be very confident in the safety of 7th Floor tubing, and I've seen many other forums recommend them as "the place" to get tubing. So I thought I would come here for a second opinion. So, I'm worried. I've read that the 7th Floor tubing is food grade PVC tubing, which has low operating temperatures. Apparently food grade PVC only has an operating temperature of 150 F degrees. The other forum I posted on had the general consensus of "by Rating: 5