The design is really good. There is almost no torque on the transparent plastic case. The " Nut" is tightened, creating a perfect seal. Other designs have clear plastic threads that will inevitably snap when tightened. That's right! The only downside is that the bleeder screw isn't tight enough. There should be a metal safety valve attempt to pump air out of the filter, f log the plastic fitting several times from the case. So far I've restored it every time. Over time I will replace it with something less spirited.
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