EPDM radiant tubing

[Tom Raymond]

Can anybody point me in the right direction to research this tubing? Mid to late 80s, rubber tubing on a radiant floor heat loop, no markings on any of the visible portions, way too flexible to have an oxygen barrier.

My research has brought up a few different brands from several different manufacturers from Watts to Goodyear. I would think that if it was made for the application it would have some sort of marking on it.

My concern is that this is a hay farm and it my not be a listed material, but rather an EPDM or LDHP ag product.

Thanks in advance...

[John Kogel]

I think you are right about not being able to confirm that it is listed. From the picture it just looks like the black poly pipe that we would use for irrigation or such. Also those look like flaky clamps for hot water under pressure.