The safety valve nominal size for propulsion boilers and superheaters must be not less than 1 1/2 inches and not more than 4 inches. The term 'nominal size' refers to the __________.
A
free spring length
B
diameter of the huddling chamber
C
diameter of the inlet opening
D
diameter of the feather
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Question 1 / 205eccefa0bacbc34ba4d46d6a
Question 1 of 205eccefa0bacbc34ba4d46d6a
The safety valve nominal size for propulsion boilers and superheaters must be not less than 1 1/2 inches and not more than 4 inches. The term 'nominal size' refers to the __________.
The safety valve nominal size for propulsion boilers and superheaters must be not less than 1 1/2 inches and not more than 4 inches. The term 'nominal size' refers to the __________.