Review on Hourleey Pressure Regulator Screened Trailer by Greg Baker

The pressure regulator has a 3/4" male fitting on one end and a female fitting on the other. So you need to buy a fitting with both to install it, right? WRONG! 4" MPT works fine on the inlet, 3/4" FPT will NOT work on the outlet (it's a hose fitting). No problem, the outlet is a separate fitting, it just needs to be removed and replaced right? I could literally do it with two decent pipe wrenches (the strong enough to pry out 30 year old rusted cast iron pipes) it cannot move.