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I prefer the AMR system where to ball seats against the steel pump outlet bush. (Mk3 is steel "bullet" on rubber)I think I improved the AMR by using an appropriately radiused dremel stone to create a matching "seat" on the bush end for the ball to sit in.I think there's a reason that industrial hydraulic check valves have steel-on-steel components, and that is durability.
I prefer the AMR system where to ball seats against the steel pump outlet bush. (Mk3 is steel "bullet" on rubber)
I think I improved the AMR by using an appropriately radiused dremel stone to create a matching "seat" on the bush end for the ball to sit in.
I think there's a reason that industrial hydraulic check valves have steel-on-steel components, and that is durability.