About the selection pump of Siam tank terminal, I would to explain more
They need to bring the pump assembly to mobile pump. The pump can moving to multi point for transfer chemical, this application they have pattern from Toyo Gosei Kogyo Co., Ltd. Japan. By Toyo Gosei Kogyo use pump type mechanical seal for assembly to mobile pump.
About application they use pump to transfer Solvent (1,2,4 trimethyl benzene ,acetone ,linear Alkyl benzene),flow around 30m3/hr. , head around 20-30m. depends on the load chemical to truck
My opinion I'd recommend you use a magnetic drive, but I'm not sure about the limited of pump
1 about drive run because the customer wants to empty tank
2 the pump assembly as a pump that can be moved.