🔍 Key Concepts

• Function of a gland seal regulator in a steam turbine system • Where pressure is sensed versus where flow enters or leaves the manifold • Difference between seal steam supply/return connections and a small instrument sensing line

💭 Think About

• Trace the path of the seal steam in the manifold and identify where pressure needs to be measured so the regulator can adjust correctly. • Look for the smallest line that would reasonably go to an instrument or control element, not a main flow passage. • Compare each labeled point (A, C, D, G) and ask: Is this a main steam passage, a drain/relief, or a sensing/tap connection?

✅ Before You Answer

• Verify which labeled port is a small-diameter tapping rather than a large flange connection. • Confirm that the chosen label is located where it could see actual gland seal pressure, not supply pressure before regulation or drain pressure after throttling. • Check that the line you choose is connected toward the control piston/diaphragm area, since that’s what needs the sensed pressure.