Civil Engineering - Water Supply Engineering - Discussion

18. 

The valve fitted closely in a recess against an opening in a pipe, is generally

[A]. wedge shaped circular disc
[B]. spherical disc
[C]. parallelopiped disc
[D]. conical shaped circular disc.

Answer: Option A

Explanation:

No answer description available for this question.

Half Engineer said: (Oct 9, 2019)  
Answer should be D option.

Jinz said: (Mar 6, 2020)  
@Half engineering_please do let me the source.

Dani Daniels said: (Aug 12, 2020)  
How?

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