When repacking a reciprocating pump with...

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Question 1 of 205eccef9bbacbc34ba4d45372

When repacking a reciprocating pump with more than four rings of packing, the packing is cut square, installed with the ends abutted, and each succeeding ring staggered with the butted ends __________.

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🔍 Key Concepts

• Purpose of packing rings in a reciprocating pump (sealing and wear distribution) • How staggering the joints affects leakage paths and strength of the packing • Typical angular separation used to minimize a straight leakage path through multiple rings

💭 Think About

• If all the packing joints line up, what happens to the leakage path along the shaft or rod? • How does increasing or decreasing the angle between joints change the chance of creating one continuous path through all the rings? • Which option best spreads the joints so they are as far from forming a straight line as possible while still being practical to cut and install?

✅ Before You Answer

• Be clear on the goal: break up straight leakage paths through the packing. • Consider which angle gives even distribution of joints around the circumference with multiple rings. • Ask yourself which of these angles is most commonly specified in maintenance manuals for pumps and valves.

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