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should the shut off valves on the middle trailer of a set of triples be open or closed
Closed on the first trailer in set of doubles. No on the middle trailer. No of a set of triples
should be in between intakevalve movement and exhaustvalve movement Yes, valves should be closed.
Valve shutoff classifications refer to the ability of a valve to completely stop the flow of a fluid. The classifications include "tight shutoff," which means the valve can fully stop the flow, and "loose shutoff," which indicates some minimal leakage may occur even when the valve is closed. Different valve types and designs offer varying levels of shutoff capabilities based on their intended use and operating conditions.
One for the hot water, one for the cold.
There should be a fuel shutoff that needs to be adjusted, but let the car idle a couple of minutes before shutting it off and the valves should cool off enough to not diesel.