An inverted gate valve (stem pointing downward) may be subject to wear sooner than a similar valve installed in the upright position because __________.
• how gravity affects internal parts of an inverted gate valve • where sediment and debris tend to accumulate in piping systems • which valve components actually move and rub during normal operation
• Think about which part of the valve is moving against another surface every time the valve is opened or closed and how its orientation might change the load on that part. • Consider where dirt, rust, and other solids in the line would naturally settle when the valve body and bonnet are upside‑down. • Ask yourself which option would most directly increase friction or misalignment on the stem or gate, leading to faster wear.
• Identify which component (gate, stem, packing, or gland nuts) typically experiences sliding/contact wear during operation. • Decide whether inverting the valve would realistically change gravity’s effect on that component. • Consider whether sediment accumulation in an inverted bonnet would increase wear on moving parts or simply collect away from them.
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