How do you prevent vacuum? With a supply intake. Why would you leave the tank to pump open?
When do you shut the TANK to PUMP?
County Fire Tactics
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How do you prevent vacuum? With a supply intake. Why would you leave the tank to pump open?
The Only time the Tank to Pump should be closed is if you are drafting. Most pumps have a flapper valve in the intake that will shut the tank to pump off once a pressurized water source is hooked in. Also, As soon as that water source is hooked in