| 1. | The drain valve is usually at the base of the furnace.
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| 2. | Both systems have drain valves at the base of the furnace.
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| 3. | Each feed is also fitted with a drain valve for cleaning each sight glass.
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| 4. | Now position a bucket under the boiler drain valve.
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| 5. | Many tankers are equipped with fast-drain valves on the sides and back of the truck.
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| 6. | Experts have since identified the malfunction _ a faulty drain valve _ and fixed it.
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| 7. | If water pressure is bled away through a drain valve, obviously that will reduce its pressure too.
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| 8. | Release the pressure, open the drain valve and ring tubing, while maintaining air flow through the system.
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| 9. | After the tank has been drained, close the drain valve and vacuum-breaker plug then open the shutoff valve.
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| 10. | Q . The drain valve on my hot water heater is closed and I can't get it open.
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