Recent content by octane75

This is great info. guys, thanks. I'll keep you updated.

Thankyou this is kind of what I thought originally, that that the waste pipe diameter does provide a fixed resitance to the flow rate. Now I just need a equation to work it out so that I can specify the correct pressure of pump to empty it in the required time. You're right looks like its...

Okay, thanks guys, this is good input. (the situation does have a practical application and noise is not an issue) So am I correct in thinking now that maximum flow rate through a pipe is not dependent on pipe diameter?

but surely there is a maximum flowrate of the plug outlet and wate pipe. How do I work out flow rate based on the pipe diameter? (assume pump is as powerful as a needed)

This is a particularly odd question: Assuming its 3-4 mins under its own water pressure does anyone know how to calculate how quickly a typical bath full of water with standard waste fittings could be drained if the drain was pumped? :?: