No sweat sorry if i came off too strong. Basically there was nothing but bubbles on the filtered side. I Teflon taped the hose barbs, no effect. I got brass fittings, still leaked. Tried pipe dope, still leaked. So I examined the big o-ring, it looked fine. Tried other hoses, still nothing but bubbles. So by now the wine I'm trying to filter is junk so I dumped it into my still and made some brandy. I took it into work and had my engineer look at it and he said that the all plastic housing was meant to filter house lines at low psi not handle vacuum. So I dumped it in the garbage. Honestly I don't care since the smart thing to do was test it in water first and I didn't do that. Like i said everything else you sell is top notch and I recommend it.