In the illustrated steam pressure reducing...

Question 1 / 270705eccefa5bacbc34ba4d487be

Question 1 of 270705eccefa5bacbc34ba4d487be

In the illustrated steam pressure reducing valve, the purpose of the item labeled "C" is to __________. See illustration GS-0044.

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Question 1 of 27070

In the illustrated steam pressure reducing valve, the purpose of the item labeled "C" is to __________. See illustration GS-0044.

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Steam pressure reducing valve flow path from inlet to outlet • How downstream (reduced) pressure is communicated back to the control section • Difference between a pilot line feeding actuating steam and a sense line feeding pressure to a diaphragm or piston

💭 Think About

• Trace where the steam at the OUTLET side would need to go so that the valve can "feel" the reduced pressure and adjust itself—does item C connect the outlet region to a control element? • Look closely at what component is directly influenced by the pressure carried through C: does it act on the main power piston, the pilot valve, or the diaphragm/spring assembly? • Ask yourself which item in the drawing would actually move in response to downstream pressure changes, and which small passages must supply that pressure.

✅ Before You Answer

• Verify whether C connects the outlet (low‑pressure) side to a chamber above or below any diaphragm or piston. • Check if C appears to be a balanced passage around a valve element (suggesting equalization above and below), or a single feed line going to a sensing/control space. • Confirm whether there is a separate line that obviously supplies high‑pressure (inlet) steam to the pilot and power piston; contrast that with C’s location and connections.

Question 1 of 27070

In the illustrated steam pressure reducing valve, the purpose of the item labeled "C" is to __________. See illustration GS-0044.

provide sensing of downstream pressure to the control diaphragm

equalize pressure above and below the power piston

equalize pressure above and below the pilot valve

provide a supply conduit of actuating steam for the power piston

Question 1 / 270705eccefa5bacbc34ba4d487be

Question 1 of 270705eccefa5bacbc34ba4d487be

In the illustrated steam pressure reducing valve, the purpose of the item labeled "C" is to __________. See illustration GS-0044.

Back

Question 1 of 27070

In the illustrated steam pressure reducing valve, the purpose of the item labeled "C" is to __________. See illustration GS-0044.

If the question has a related picture, it will appear here.