Design engineers must use their experience and the latest design tools to maintain reasonable safety levels while providing the most cost effect design. One tool being used on an ever increasing basis is Finite Element (FE) analysis software. A lot of research is being directed towards snap shut and gradually flow reducer valves due to high pressure and high temperature application like fertilizer industries, process industries, boilers etc. these valves act not only as structural element but also source of high stresses in a high pressure application systems. The key challenge to determine high stresses and design parameters is the improvement of dynastic accuracy based upon given amount of information. It is observed that a lot of work has been done on valves. A little work is reported on high stresses in snap shut and gradually flow reducer valves. This work attempts to analyse high stresses and design parameters of these valves and also determine these high stresses by using FEA analysis & finalise the valve thickness. The effect of severity of high stresses on the snap shut and gradually flow reducer valves also need to be investigated. Experiment needs to be conducted, for obtaining high stresses of these valves with different loading conditions and different design parameters. Further, the present research work to enhance snap shut and gradually flow reducer valves reliability, availability, safety and reduce maintenance cost. The scope of dissertation is to analyze design parameters of self-regulating pressure valve and determine which the optimum design solution is.