I have a Bauer Purus block with a 2HP 220V motor and P21 filter. The filter is set up to blow off at 3000 psi. It's not a convenient procedure to change this, especially for tank to tank changes. What's a good, safe way to fill tanks that require different max pressures, other than standing there watching the gauge? Is there an automatic switch of some sort available?
Thanks,
jv