I am trying to find a formula to calculate packing friction for a reciprocating-stem valve (gate valve). We are using flexible graphite braid packing. Can anyone point me in the right direction?
Thanks.
I think all of your points are good. This confirms my suspicion that only in extraordinary circumstances would one use a three- or four-start screw. Thanks for the input.
I am working on an electric actuation standard for my company (we make gate valves). I have found a lot of info on the web about Acme power screws, which are what we use in our actuators, but there's one thing I can't seem to find: a discussion about the availability/practicality of using...
