pumping hot water and pump positioning

Hot water pump Question:

Hi

Can I use a shurflo pump to pump hot water?  Do you know where I can
find a diagram of how to fit a pump (does it need to be above the
tank, below the tank etc)   I understand that they sense pressure
difference, so when a tap is opend they will pump.  Does that mean
that the pump should be higher than the tap so as the  tap is opened
the water fall away under gravity and the pressure is reduced?  Or can
the pump be below the tap and it senses a pressure drop when the tap
is open?  What pressure in bar is created in the system as I want to
add some valves.  I have found some that are rated at one bar.

Thanks

Darren

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