Our ALL-NEW Extreme-Flow EFI Regulator now comes with -12 ports! It?s designed for use with Belt or Hex Drive Fuel Pumps. Compact, 2-Port Body with dual ORB-12 inlet/outlet ports and one ORB-12 return port. 0.500? high-flow valve/seat, able to handle 7-32 GPM Fuel Pumps. Dual springs expand the range of operating pressure while maintaining a low profile regulator with reduced weight. Standard spring (installed) supports 30-75 PSI base fuel pressure. High Pressure spring (included) supports 75-120 PSI base fuel pressure. Supports vacuum and boost reference on a 1:1 ratio with PSI.