Equipment I Correct! Incorrect! 1. A __________ valve is an example of a throttle valve. ball butterfly 3-way needle View the lesson section again Correct! Incorrect! 2. Expansion joints and expansion loops allow for the expansion or contraction of piping due to ________ changes. pressure flow temperature level View the lesson section again Correct! Incorrect! 3. ________ valves are used to stop and start flow. Isolation Throttle Check Relief View the lesson section again