Float controlled separator valve

A flow control device for allowing the discharge therefrom of the heavier of two liquids and for preventing the discharge therefrom of the lighter of said two liquids comprised of:

• a vessel;
• said vessel being a container having an opening in the top of said container;
• a liquid inlet conduit penetrating wall of said vessel, having an orifice at one terminal end of said conduit positioned within said vessel and aimed vertically upward;
• the opposite end of said inlet conduit being provided with means whereby said conduit may be attached to liquid supply;
• a liquid outlet conduit penetrating wall of said vessel, the opposite ends of said outlet conduit having an orifice located inside and outside of said vessel, respectively;
• one of said liquid outlet conduit orifices being located within the bottom of said vessel;
• an intermediate section of said liquid outlet conduit being at an elevation below that of top of said vessel and above that of said inlet conduit orifice;
• and one of said liquid outlet conduit orifices being located exterior to said vessel and at an elevation below top of said vessel;
• a float disposed within said vessel positioned above said inlet conduit orifice;
• said float having a net mass density greater than that of each of said two liquids;
• a hollow cavity within the interior of said float being of volume large enough to reduce the gross mass density of said float and said cavity to less than density of the heavier of said two liquids;
• an opening at the top of said cavity extending out of said float by which means liquid may flow into said float;
• and
• an orifice sealing member disposed between bottom of said float and said inlet conduit orifice by which means said inlet conduit orifice is closed when weight of said float acts downward against said member.