Valve dynamics has great impact on the overall efficiency of a hermetic reciprocating compressor. Suction and discharge valves are responsible for the refrigerant flow rate throughout the vapour compression refrigeration system and the suction valve influences more than the discharge valve when efficiency is considered. The closing and opening of a suction valve affects many parameters such as effective flow and force area, backflow effect, fatigue, valve displacement etc., which directly affects the efficiency of the compressor. In the present work, a two-way Fluid Structure Interaction (FSI) simulation is carried out to study the influence of inlet pressure of refrigerant on suction valve dynamics of a hermetic compressor. For validation purpose a small experimental setup is made where air is taken as working fluid in place of refrigerant. In experimental studies, the deflection of the valve is measured by strain gauge which is connected to a wheat stone bridge in the laboratory. The inlet air is supplied from a compressor and its pressure is controlled by a pressure regulator. The numerical simulation is carried for the same experimental boundary conditions and the predicted deflection results for 0.5 bar is validated by a two-way Fluid Structure Interaction (FSI) methodology in ANSYS Workbench 16.0 which includes ANSYS Mechanical and ANSYS Fluent. The stresses are plotted in ANSYS Structural tool on the surface of suction valve and its corresponding deflection is obtained. Pressure contours on the surface of suction valve is plotted using ANSYS Fluent. Upon validation, the two way FSI simulation is extended to further investigate the influence of inlet pressure of air from 1.0 bar to 3.5 bar and the corresponding deflection of the suction valve is predicted. The current work may be used as benchmark for numerical studies of a hermetic compressor using two way FSI simulations.