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OPERATION CONTROLS ASSEMBLY
LAUNCH VALVE STROKE TIMER ELECTRICAL SYSTEM

Aviation Boatswains Mate E - Aviation theories and other practices
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HYDRAULIC CYLINDER ASSEMBLY The hydraulic cylinder assembly (fig. 4-8) is connected to the operation control assembly. The hydraulic cylinder assembly is actuated by pressurized hydraulic fluid to open and close the steam valve assembly. When pressurized fluid is applied to port E, the piston moves to the opposite end of the cylinder to open the steam valve. The rate of movement of the piston is faster at the beginning of the stroke, because of 4-7 FRAME LIFTER LINK LIFTER LEVER LIFT NUT THRUST RING ADJUSTING NUT HEAD-COVER PLATE ROTATOR LEVER ROTATOR LINK CROSSHEAD ABEf0408 Figure 4-7.—Launch valve operation control assembly. ORIFICE SNUBBER PISTON CYLINDER FLANGE PISTON ROD PORT E (OPENING PORT) METERING ROD PORT A (CLOSING PORT) PORT B FLANGE ABEf0409 Figure 4-8.—Launch valve hydraulic cylinder.







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