Thank you all for your responses, please allow me to elaborate and respond as follows:
- The oil density is relatively low at around 860kg/m3 (aprx .03lb/in3)
- I have attached a rough sketch of the plumbing configuration that my colleague intends to use for this system, by his own admission...
A vacuum pump is mounted at ground level. The pump is connected to a tree of overhead pipework at a height of 20ft, connected to the pipework are 12 hose reels that can be attached to oil drain tanks. The client requests that the pump be sized so that sufficient vacuum can be achieved to suck...