Why do these lower my water pressure? Do these have a restictor that can me removed?

Thank you for reaching out to us! These should not lower your water pressure however, depending on the accessory you are using them with the flow might be lower but is based upon the inlet of the accessory as much as it is upon the quick connects. If there is anything else we can do for you or if you would like to talk this over please feel free to reach out to our office in Denver at 303-867-1537 Thanks!