Orifices

Annular Leakage (IL): Leakage through an annular gap between a circular tube and a cylindrical rod in an isothermal liquid network.
Orifice (IL): An opening of constant or variable area in an isothermal liquid network.
Spool Orifice - Round Holes (IL): The opening between the spool valve and the sleeve with round windows or rectangular window in the isothermal liquid network.
Variable Overlapping Orifice (IL): An opening formed by open segments with variable overlap in an isothermal liquid network.