Which of the Following Statement(s)is (Are)true About Diaphragm Type of Valves

question 64

Multiple Choice

Which of the following statement(s) is (are) true about diaphragm type of valves?
1) A partial rotation of a diaphragm type of valve will not open the stem.
2) The valve seat in a diaphragm type of valve does not turn.
3) The diaphragm type of valve contains two fiber washers.
4) The diaphragm type of valve uses a threaded stem.

• A) 2
• B) 1 and 4
• C) 3 and 4
• D) 2 and 4

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