University of Hong Kong, Department of Mechanical Engineering performs the follow tests; Leakage, Resistive Torque, Flow Characteristics (with water closets), Passage of Bulky Foreign Matter (without water closets) and Aerosol Penetration.  The test results are exceptional and we are especially proud at the Aerosol Penetration test, where Poseidon^® non-return valve achieved 99.07 percent blockage of gas penetration. In addition, Poseidon^® non-return valve also achieved 100 percent water blockage in the Leakage test.

Poseidon^® non-return valve successfully passed all BS 4514 tests performed by MateriaLab. These tests include Ball Passing Test, Vicat Softening Test and Corrosion Resistance Test.