Saffa
Member
Very good point about the process media Tom. We've all made a few assumptions here!
We have also used proximity switches on the swing arm of non-return valves for a flow indication. Works well for fixed speed pumps. Does require a particular type of NR though and can be a bit fiddly if the flow is low compared to the size of the pipe, i.e. non return valve is only fractionally opened by the passing flow.
We have also used proximity switches on the swing arm of non-return valves for a flow indication. Works well for fixed speed pumps. Does require a particular type of NR though and can be a bit fiddly if the flow is low compared to the size of the pipe, i.e. non return valve is only fractionally opened by the passing flow.
