Quality ball valves


Before you go telling people they don’t know how to take care of equipment, please tell me why the ham-let valves DO NOT have the packing nut. They have one accessible nut outside the handle, unlike the blue valves which have two. I’m not stupid, I asked for advice on an issue I’m having, not for someone to incorrectly state how these are built. Again, if I’m wrong please tell me what I do not yet know. What I do know is that the nut gets loose very quickly, I’m running my machine every day and have to check every valve to see which need to be tightened or else they begin to leak

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