@dgarretson Thanks for the Fabco info. I was a bit lost as to what to look for. Correct me if I’m wrong. It looks like a three-way valve. The turn knob is opposite to a open valve where a future Weiss gauge could be inserted, and the tubing passes through the other two holes.
Given the addition of surge tanks, and a clear difference in pressure input, at the pump end, and output, at the manifold, I am inclined to place the gauge before the manifold as you have done. This way one reads the actual pressure going directly into the arm.
One last question regarding the gauge. Most of the Weiss gauge I’ve been able to find has a calibration from 0-10 PSI. As the arm is seeing pressure in the low single digits, is there a specific model gauge that you were using? @terry9 is setting his arm at 0.5 PSI at the pump end.
@terry9 The stiffness of material was mentioned in the context of a different surge tank. Instead of using plastic barrels or PVC tubes, my friend suggested using coiled copper tubing, like radiators, as another form of air modulator. For this type of ‘surge tank’ to be effective, the tubing material has to be stiff, at least stiffer than the plastic tubing that air is traveling in.
The only question in my mind is whether simply using long runs of plastic / silicone, i.e. soft, tubing modulates air flow. It doesn’t seem to disrupt or otherwise ‘ modulates’ the behavior of the air flow. In anycase, my total length of tubing used is probably 5 m, so l cannot test the benefits of long tube runs. It’s purely speculation on my part.
Given the addition of surge tanks, and a clear difference in pressure input, at the pump end, and output, at the manifold, I am inclined to place the gauge before the manifold as you have done. This way one reads the actual pressure going directly into the arm.
One last question regarding the gauge. Most of the Weiss gauge I’ve been able to find has a calibration from 0-10 PSI. As the arm is seeing pressure in the low single digits, is there a specific model gauge that you were using? @terry9 is setting his arm at 0.5 PSI at the pump end.
@terry9 The stiffness of material was mentioned in the context of a different surge tank. Instead of using plastic barrels or PVC tubes, my friend suggested using coiled copper tubing, like radiators, as another form of air modulator. For this type of ‘surge tank’ to be effective, the tubing material has to be stiff, at least stiffer than the plastic tubing that air is traveling in.
The only question in my mind is whether simply using long runs of plastic / silicone, i.e. soft, tubing modulates air flow. It doesn’t seem to disrupt or otherwise ‘ modulates’ the behavior of the air flow. In anycase, my total length of tubing used is probably 5 m, so l cannot test the benefits of long tube runs. It’s purely speculation on my part.