DeLaval Barrel Boiler Feed pump
DeLaval Barrel Boiler Feed pump
(OP)
We are getting short life (2yrs.) out of the Balance drum/disc. design of a DeLaval Barrel pump. I understand the pump is no longer made but would like info on an upgrade for this design. The latest ugrade was hardened 400 series stainless. The gap starts at .005 thds.(per IOM) and opens up heating up the thrust bearing. Start temp. is 140 and alarm is at 180 with shut down at 180 F. We get 8yrs. out of IDP.





RE: DeLaval Barrel Boiler Feed pump
If you only have a disk fitted that operates like a variable orifice it will run at about 0.005 thou from the stationary plate. The thrust is taken up hydraulically. On some designs, especially if pumping petroleum products, a thrust bearing was fitted to prevent the impellers running up and seizing on the pump chambers in the event of a balance disk failure. The bearing will run very hot warning the operations to shut the unit down but at least it will prevent a catastrophic failure.
Perhaps you can explain the device you have fitted in more detail and I will try and assist you better. A sectional arrangement drawing would be better still.
RE: DeLaval Barrel Boiler Feed pump
RE: DeLaval Barrel Boiler Feed pump
I suggest you advise me if the foregoing makes sense so far and then we will go for the final solution.
RE: DeLaval Barrel Boiler Feed pump
RE: DeLaval Barrel Boiler Feed pump