An electrical submersible well pump installation has a downhole secondary pump for pumping scale inhibiting chemicals below the downhole pumping assembly. The downhole pumping assembly includes a cent

A self-priming chemical pump which comprises: a pump portion including at least an impeller and a shaft supporting the impeller; a self-priming mechanism portion including a self-priming chamber which

The liquid pressure capacity of a chemical injector pump is increased substantially by using high pressure gas to drive the gas motor.

The check valves on this steam locomotive are located under the small dome between the chimney and the main domeCheck valves are often used with some types of pumps. Piston-driven and diaphragm pumps

This invention discloses an extremely simple chemical heat pump system utilizing the chemical reaction heat of a perfectly reversible chemical disassociation reaction system wherein one gaseous compou

One sort of pump once common worldwide was a hand-powered water pump, or 'pitcher pump'. It would be installed over a community water well that was used by people in the days before piped water suppli

Determine the specific type of pump, the pump is adopted after the series, you can press the maximum flow rate, zoom 5% - 10% margin of the head after the performance of these two main parameters, the

A chemical pump includes a pressure chamber, a partition member for dividing the pressure chamber into a cleaning pressure chamber and a discharging pressure chamber, a filter part disposed on the pri