🔍 Key Concepts

• Trace the flow of live steam supply from the main line into the pressure‑regulating portion of the gland seal regulator body • Distinguish between lines that supply steam to the glands and lines that sense or vent pressure (pilot/sensing and exhaust lines) • Note which line connects directly into the regulator valve body/manifold upstream of the regulating element (piston/diaphragm)

💭 Think About

• Which labeled line clearly brings steam into the regulator, rather than taking steam away to the glands or to an exhaust/return? • If the regulator is meant to control header pressure, where must the upstream (supply) side connect in relation to the main manifold and the regulating piston shown? • Looking at the cross‑section, which line’s passage leads to the area just before steam passes through the main regulating valve element (piston E)?

✅ Before You Answer

• Verify which line is on the upstream side of the regulating valve/piston inside the gland seal regulator body • Confirm that the chosen line does not discharge toward the turbine glands or a drain/return connection but instead feeds the manifold or regulator inlet • Double‑check by following the shaded flow path in the manifold to see which label marks the initial live steam entry point into the regulator assembly