Technician A says all gaskets should be discarded during teardown to keep the work area clean. Technician B says to keep the old valve body gaskets intact to make sure the replacement is a perfect match. Which technician is correct?

What is solenoid valve?

On the low-pressure side of a double diaphragm seal system, the transmitter measures a pressure of 108 in. WC when the tank is empty. Which process should you apply before measuring on the high-pressure side? Low water level cutoff  Ratholing
 Zero suppression
  Blowdown

When installing a new oil filter, it is a good idea to: Select one: a. wipe a small amount of contact cement on the gasket. b. clean all oil from the mounting area and install the gasket dry. C. wipe a small amount of oil on the new filter gasket. d. wipe a small amount of gasket sealer on the new filter gasket.