The gland seal regulating station includes which elements?

• A. Inlet and outlet isolation valves, a bypass valve, and a pneumatically operated pressure-regulating valve
• B. A single gate valve and a manual relief valve
• C. Only an inlet valve and a check valve
• D. A manual bypass and a needle valve

Answer: (A)

Maintaining the gland seal at the correct steam pressure is essential to prevent leaks and keep the seal functioning properly. This requires three key pieces: the ability to isolate the seal line, a bypass path around the regulator, and an automatic regulator to hold the pressure steady. Inlet and outlet isolation valves let you shut off flow to and from the gland seal for maintenance or in an emergency. The bypass valve provides a path to divert steam around the regulator when needed, so you can adjust flow or relieve pressure without removing the station from service. The pneumatically operated pressure-regulating valve automatically modulates to maintain the desired seal pressure, ensuring a stable, controlled seal. The other options omit one or more of these essential elements, so they don’t provide the complete, controllable gland seal regulation required in normal operation.