Referring to the illustrated impulse steam trap, what would be the effect of threading the control cylinder "E" downward further into the trap body? GS-0002

Correct Answer: Option D — The clearance between the reverse taper of the control cylinder's inner wall and the periphery of the valve disk will increase, and as a result, the pressure drop across the periphery of the valve disk will decrease.

Threading the control cylinder downward increases the annular clearance between the cylinder's reverse taper and the valve disk periphery. This increased clearance reduces the flow restriction, thereby decreasing the pressure drop across the disk. This adjustment directly impacts the trap's impulse timing and operational sensitivity within the steam condensate system.