T&T: anti-siphon valves

[Larry N. Brown]

As part of my project to plumb my emergency bilge pumps in 1 1/2" PVC-- as I
mentioned in an earlier post-- I want to include anti-siphon valves. I
envision something I can install in a 1 1/2" PVC threaded pipe plug for
test/replacement.

Looking for some kind of dual use product so as to be cheap. Thinking of a
small diameter fitting with SS ball bearing.

Any ideas?

Regards.

Larry
M/V Cigano, Prairie 47
Currently lying:
Bay St. Louis, MS