ligersandtions
Contributor
Let me caution you about one thing....if you're going with a balanced p-valve, make sure to get check valves with very small cracking pressures. You can buy replacement check valves from some of the p-valve manufacturers/dealers. If you get commercially available check valves (1psi+ cracking pressure), there's a good chance of peeing all over yourself (and hence the reason I no longer dive with a DIY p-valve....though, I suspect this may be more of an issue for people diving she-p's).