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- Third Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q538 - Steam Plants II
104. As shown in the illustration, piston «F» in the gland seal regulator is moved upward by ________
Piston F moves upward due to lube oil pressure acting on its underside, overcoming the opposing force of the spring and linkage within the regulator. The illustration depicts the lube oil supply connected to the manifold, which directly feeds pressure to the underside of pistons F and D. Control air, nitrogen, or steam are not connected to this piston, confirming that lube oil pressure is the sole force responsible for its upward movement.
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