Referring to the manual valve (Figure 40–58), line pressure leaves outlet port 1, seating check ball 9. Line pressure passing check ball 8 moves to the throttle valve to become throttle valve pressure. From outlet 1, line pressure also flows to the pressure regulator valve, regulating line pressure. Line pressure from the same circuit flows to the accumulator, opposing line pressure and spring tension. The accumulator cushions the engagement of the intermediate band.