Baoli CPCD 80, Operating And Servicing Manual

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7.2 Flow regulator
The flow regulator is located between the control valve and the high pressure ports
of the two lift cylinders, near the left lift cylinder. The structure of the flow regulator valve
is shown in Fig7.2.
When the lift spool valve is placed in the “lift” position, the oil from the control valve
flows through the oil chambers A and B, C, oil holes H, G, D, E, and the chamber I to the
lift cylinder without any regulation. When the control
valve is placed in the “down”
position, the oil flows through chamber I, oil holes E, D, G, H, and chambers C, B, A to
the valve. Then there is pressure difference between chamber A and C. Turn on the ball
valve (4), a pressure difference overcomes the force of the spring (9) and moves the
valve core (5) right, thus the oil flow being decreased by narrowing of the hole G and H,
and reduces the oil flow passing through the throttle plate.
The flow regulator valve serving both as a flow regulating valve while forks are
being lowering and a safety device if rubber hoses between the control valve and lift
cylinders are damaged due to any reason.
Fig.7.2 Flow regulator
1. Spring 4. Nylon ball 7. Snap ring 10. Joint
2. Valve sleeve 5. Valve core 8. Valve body
3. Spring 6. Throttle plate 9. Spring