Under normal conditions, valves a to c are open and valves d and e are closed. Answer the following: 1- Explain, carefully, the sequence of opening and closing valves required to change out the valve stem on the control valve (valve b). 2. What changes if the process stream did not contain a process chemical but contained process water? 3- It has been suggested that the bypass valve (valve d) be replaced with another gate valve to save money. What do you recommend? 4. What would be the consequence of eliminating the bypass valve (valve d)