Would this work? I have a Hatsan spark compressor and I added a Tuxing large filter to it. The problem is that by the time it fills up the filter to pressure and starts to fill the gun it is close to its max temp so I have to shut it down and wait. I'm thinking to add a shut off valve to both ends of the filter so that I can shut them and keep the filter at pressure while I bleed the line to the gun and compressor so that I can disconnect them. I found a small filter with a built in bleeder that I can put on the line going to the gun to bleed that line and I can bleed the compressor with its built in bleeder but I need two shut off valves, one on each end of the filter. Does anyone know where to find them? I guess it would also be nice to have a gauge that shows the pressure in the filter.