Pressure Control Devices

Question 1

According to the AOTM, what maintenance should be done monthly to the Hale pressure reducing valve?

Answer 1

Set pump pressure to 150psi and operated handle counterclockwise several times to be sure it is operating freely

Question 2

According to the AOTM, where is the relief valve proper mounted on the pump with the Waterous relief valve?

Answer 2

It’s mounted in between the suction and discharge

Question 3

With the Waterous relief valve, according to the AOTM, what does the pilot valve and 4way valve control?

Answer 3

They control the operation of the relief valve and are mounted on the operators panel

Question 4

With the Waterous relief valve, what must be done in order to achieve pressures above 300psi

Answer 4

It must be turned off

Question 5

According to the AOTM, what position should the 4way valve be carried in?

Answer 5

Carried in the off position

Question 6

According to the AOTM, the PTO provides a positive means to control the transmission of engine power to special equipment

True OR false

Answer 6

True