Normal screwed fittings are used for pipes upto a diameter of _______________ inches?
Correct answer: B. 3
- A. 1.5
- B. 3
- C. 5
- D. 9
Explanation
Screwed pipe fittings are convenient for small-diameter piping but become impractical for larger sizes because of threading, leakage, and installation difficulty. The usual upper limit for normal screwed fittings is about 3 inches.
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