I have that one in 110v. I got mine on Aliexpress. I have only had it for a month and only use it to fill my maurauder. So far so good.
Ray, won't air flow the same regardless of filter position? Least resistance is the same regardless of its orientation. Also doesn't a guns check valve act as a PMV? Or not opening the tank valve until the input pressure is greater than what's in the tank?