I used brass needle valves, brass fittings , copper and plastic tubing. On one of the club ones, a brass fitting just got stripped, my wife told me.
The Vernon club is one of the most active in the province. We have driven up to one of their field trip to the Nickleman (sp) river off the Thompson river for agates . The plateau on top has agates but since the floods washed out the logging road is now pretty inaccessible.
Because BC is geologically active and thus very interesting, rockhounding yields some semi precious stones.