| http://www.w3.org/ns/prov#value | - In a pumping system, first and second pumps each having an inlet and an outlet, means, including a control valve adjacent the inlet of the second pump, for connecting the outlet of the first pump in communication with the inlet of the second pump, a by-pass channel, including a relief valve, connecting the outlet and inlet of said second pump, a dispensing line, including a nozzle valve, connected
|
