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.

Question

Quizplus · Accepted Answer

The valve seat does not turn and is therefore resistant to scoring; it also uses a threaded stem in place of the packing found on the direct-acting valves.The direct-acting valve has two fiber washers.

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