Enabling injection and aspiration from separate ports of a single connector, these dual check valves are molded from medical grade materials; a polycarbonate housing with valves made from silicone. Options include Male Luer Slip (MLS) Outlet Port, Female Luer Slip (FLS) Inlet Port, and Female Luer Lock (FLL) Control Port, 1 psi Cracking Pressure (CP), MLS Outlet Port, FLS Inlet Port, FLL Control Port, 1.5-5 psi CP, and Male Luer Lock (MLL) Outlet Port, FLS Inlet Port, FLL Control Port, 1.5-5 psi CP.