Question 270General Subjects - Assistant Engineer70% to pass
Referring to the illustrated impulse steam trap, what would be the effect of threading the control cylinder "E" upward out of the trap body? Illustration GS-0002
AI Explanation
The correct answer is A.
Unscrewing the control cylinder (E) upward would decrease the clearance between its reverse taper and the valve disk's periphery. This would increase the pressure drop across the valve disk, as the restricted flow path would create a higher pressure differential.
The other options are incorrect because:
B) Decreasing the clearance would actually increase the pressure drop, not decrease it.
C) Increasing the clearance would decrease the pressure drop, the opposite of what is stated.
D) Increasing the clearance would decrease the pressure drop, not increase it.
Related Questions
#268 What statement representing the primary purpose of a steam trap is true? #269 What type of steam trap is most susceptible to damage if allowed to come into contact with superheated steam? #271 Referring to the illustrated impulse steam trap, what would be the effect of threading the control cylinder "E" downward further into the trap body? Illustration GS-0002 #272 In order for a steam trap to be effective in accomplishing its intended purpose, what statement is true regarding its installation? #273 In the illustration shown, an efficient seal is maintained between the suction cover and the volute by _______________. Illustration GS-0012