Can Someone knows about Valve Design answer all 6 questions

Can Someone knows about Valve Design answer all 6 questions to the best of their abilities. Mechanical Engineering (MECT)

Technical Information - API, API 6A Stud Area Torque - American Standard Thread Dimensions

1. What are three major advantages that a Floating Ball Valve has over a Trunnion Ball Valve? 2. What are three major advantages that a Trunnion Ball Valve has over a Floating Ball Valve? 3. Sketch a cross section of of a Trunnion Ball Valve seat. A. Show the section used to contain the hoop force. B. Show the section that represents the pressure area the seat must contain. C. Write an equation for hoop stress using labels you show in \"A\" and \"B\" 4. Given a thick wall pressure vessel with pressure of 10,000 psi, an inside seal diameter of 12\", and a thick 8 bolt top, answer the following: Assume standard A193 B7 bolting material using an allowable stress of the yield stress. The preload stress on the bolting is 80% of yield. A. What size stud is required? B. What is the preload torque required? C. At what vessel pressure will the bolting stress increase? D. Will the bolting stretch as the pressure increases up to 10,000 psi? E. What force is offset as the pressure in the vessel increased up to 10,000 psi? 5. Sketch a double block and bleed trunnion ball valve. Relevant parts only is OK.

Solution

Advantages of floating ball valve over trunnion ball valve

1.Simple in structure : A floating ball valve has a simple structure when compared to trunnion ball valve. It has low weight and low volume.

2.Good sealing :The sealing in floating ball valve is exit sealing. A floating ball valve ensures greater medium pressure which ensures better valve sealing performance. However it is used in medium and low pressure applications.

3.Simple in functionality : Opening and closing of valves is easy when compared to trunnion valves.

Advantages of trunnion ball valve over Floating ball valve

1. Good sealing and low operation torque: A trunnion ball valve operates in low operating torque. The doube sealing (enterance sealing and exit sealing) makes a reliable stem sealing.

2:Full and partially opened ports: The construction of valve closing makes it an advantage to open the ports fully or partially.

3.High pressure pipeing: A floating ball valve cannot operate in high pressure but trunnion ball valve can operate on high pressure with good sealing.