Posted 15 February 2009 - 07:33 PM
Art Montemayor is an authority on this topic and he has given excellent advise. I have never heard of anyone using a API pump for LPG service and would be very surprised to find one exists. LPG and, in general, liquified gas pumps are specialized equipment. Get one built for the service you have in mind. Corken and Blackmer are two I've seen used, though I'm sure there are others. Though trucks often do not have unloading pumps, I have seen trucks which DO have an unloading pump. That pump would be shaft driven using a power takeoff (PTO) on the truck. You might also choose to use a compressor for unloading. I personally like this application since it is possible to fully unload the truck in this way. (Also, it's an elegant solution.) There's another option which used no rotating equipment - only a heat exchanger to effect the transfer. I have seen a schematic but never heard of this actually being done.
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