question on check valve for osmolator

[Runfrumu]

Does the check valve have a spring in it, or is it the kind like tetra's, with the rubber lip? Because the one on the site part 5074.10 looks like it has the rubber lips inside as opposed to the spring. I was told the older ones have a spring.

Also is there not any other option on shipping for it? I was going to order it if it is the spring kind but I dont see any different options for shipping. I would like to 2 day it.

Thanks!

Mark

 

[rvitko]

The older one was just like Tetras, the newer one has a spring and is like Hagens. There are no shipping options, the website just has a flat rate and depending on the part size it is shipped UPS ground or 1st class mail. This part would ship first class mail. Honestly if you need in a hurry, any standard airline check valve would work.