Refer to the pressure-reducing valve in Figure 6-23. Assume that this automatic valve is...

Refer to the pressure-reducing valve in Figure 6-23. Assume that this automatic valve is installed in a pipeline and is adjusted to reduce pressure from 90 psi to 70 psi. In what direction should the handwheel be turned to decrease the outlet pressure to 60 psi? Explain the resulting change in operation of the valve.