Hi all, I am converting some centrifugsal pumps from fixed speed to variable speed using variable speed drives. The electrical engineer who is speccing the drives wishes to know if the drives are constant torque or constant power. My response is that a centrifugal pump is neither since both...
Complements of the season to you all!
If you have an ASME B73.1 pump specified with a Plan 32 seal arrangement, how much above the pump discharge pressure does the Plan 32 water supply pressure typically need to be please? I have a figure of 2 Barg in my mind. Thank you.
I have heard folks refer to something called "NEMA" when referring to nozzle loading due to wind or seismic events. What is this "NEMA" value that is referred to in "X" multiples? Thanks.
Hello all, I have been looking, so far unsuccessfully, for PFA/PTFE lined centrifugal pump to do a duty of around 210m3/hr flow and ~75m differential head. All the vendors I've tried cannot do a pump for this duty. Does anyone know of a vendor who can do this please? Thanks.
Hello all, we are looking to install a new pump in our facility and I am happy with the pump being offered along with a single seal with Plan 32. What I am not so happy with is the proposed supply of demin water that is proposed to supply the seal plan. The pump is being installed into a...
Good afternoon all, I would like some advice on the possibility of using an accumulator or a similar device to deliver a process fluid when a plant trips, just enough to allow the plant to run down safely, probably on complete loss of power. I need to deliver around 4 cubic meters of fluid into...
