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INCLUDED-Upper Rotating Assembly-5mm Barbed Vacuum Fitting-Vacuum Plug Fitting (Returnless)-1/4" Push-To-Connect Vacuum Fitting-3AN Male Vacuum Fitting-Anodized Half Moon Retainers (x2)-Stainless Steel Return Orifice-Stainless Button Head Screws (x5)-Stainless Steel Spring-Fluorosilicone Diaphragm
The graph below shows the minimum fuel pressure the regulator can achieve as a function of pump flow rate. For example, if you have two pumps that flow 320LPH (total 640LPH), the approximate minimum pressure the regulator can achieve is about 30psi. If an OEM fuel pressure regulator sees 640LPH for instance, it will likely not be able to bypass enough fuel.NOTE: This test was performed with the adjustment knob completely backed out, no preload.