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Valve Stem Friction
The valve is just a 10" 300lb. manually operated rising stem gate valve. I agree the largest contributor to stem friction is packing, but I'm looking for a way to reduce the operating nut friction without changing too much existing design (maybe PTFE thrust washers).- jabsab
- Post #3
- Forum: Valve engineering
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Valve Stem Friction
I'm trying to calculate opening/shutting torque values for a rising stem gate valve. The problem is that I can't find coefficients of friction for a monel operating nut on a bronze wear surface. Anyone have ideas for values or references?- jabsab
- Thread
- Replies: 7
- Forum: Valve engineering
