Abstract: The pump Injector is a brass valve with a needle type regulator that is adapted onto the intake side of a pump. This injector enables a person to regulate the flow of a liquid composition into the main flow of water or other liquid that is being pumped by adjustment of the needle valve. Specifically, the liquid that is to be used is in a container. A clear plastic hose runs from the container and connects to the pump injector. The vacuum from the pump sucks the liquid from the container up through the plastic hose through the hose connection sleeve and down past the needle valve head and along the flattened side of the brass valve. It is then sucked through the 1/16 inch side port hole and is regulated by the needle valve. The regulated flow passes on down into the liquid being pumped.