Question 448Steam Plants - Assistant Engineer

The correct answer is C) Huddling chamber type. The illustration SG-0018 depicts a safety valve of the huddling chamber type. This type of safety valve is characterized by the presence of a huddling chamber, which helps to amplify the opening force acting on the valve disc, allowing the valve to open more quickly in response to an overpressure condition. The other options are incorrect because: A) Pressure-loaded type valves use the system pressure itself to open the valve, B) Nozzle reaction type valves use the force of the escaping fluid to open the valve, and D) Jet flow type valves utilize the kinetic energy of the fluid flow to open the valve. None of these descriptions match the design shown in the illustration.