where can i get metric check valves?

[Aquattro]

Just use a regular PVC valve inline on your return line, no threads needed.

[cathyg_99]

Originally Posted by Aquattro

Just use a regular PVC valve inline on your return line, no threads needed.

i dont get it? i cant get them to fit unless i silicone them and i dont want to do that my pvc tubing is 1mm off from being a inch

[Aquattro]

I would have used rigid PVC for a return, but you should be able to get barb fittings to screw into each side of a threaded valve and install it inline.

[Aquattro]

Use something like this in a valve from Ocean Aquatics

http://www.amazon.com/LFGD-HOSE-BARB.../dp/B0002DKAM8

cut the plastic, insert valve. Maybe add some hose clamps, but probably don't need them.

[fencer]

phone up FABco