Exactly si why not have assurance of setting up a relief with a known number value on the Inlet? Simple as that. My regulator is set at 12psi.
I am not saying the relief is not "A" way to go. But again, if three or four simple parts are correct, it is absolutely not needed...
Here is my fear.
Someone reading this reads all I need to do is install a relief valve and I don't need anything else...
It has the potential to corrode in the closed position, meaning when you "Need" it to relive, it can be stuck closed. That valve is not rated for gnarly ass lake water, it is rated for potable or treated water.
Why not use a cheap gate valve to keep the water from entering to begin with? I really am having a problem understanding why you think it is so different.
I like the gate valve for several reasons, but the main one is that the CV is reverse of an actual control valve, meaning it flows "easier" with less pressure than it does with more. In other words, the more pressure you put to it, the more restrictive it becomes... for free, with no moving parts.
A control valve (like a globe or a balance valve) has a CV that is linear, menaing the CV stays constant, more pressure=more flow in a linear pattern. Undesirable for what we need.
GT
