I would have to say a water pump. You probably need to know a specific type of water pump. I think it would be a piston pump.
I would have to say a water pump. You probably need to know a specific type of water pump. I think it would be a piston pump.
The only other type of pump that I can think of that is very old and has no metal parts would be a plunger.
sorry mate, wrong and wrong.