Quote:
Originally Posted by michael.g
No, the valve core stem won't restrict airflow. It's there to keep air from flowing back out the valve stem when not adding air to a tire.
-Michael
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Your city water inlet line has a check valve installed (this prevents your water pump from pumping water out your city water connection when you are dry-camping). Therefore your valve stem core is not needed.
- Drain your freshwater tank, then run the pump until it looses suction.
- gravity drain as much water out of your system as possible by opening both your lowpoint drains, remove the drain plug on your water heater, open the bypass valve on your water heater and open all the faucets. I usually let mine drain over night.
- reinstall the hot water heater plug, shut the low point drains, shut all the faucets. leave the hot water heater bypassed.
- install your airsource to your city water inlet and pressurize your system (40-to 50psig). Your hotwater heater will store quite a bit of air.
- Starting with your low point drains (one at a time), open them until no more water comes out. You may have to shut it and repressurize with air again.
- Repeat this process, one drain/faucet at a time starting from the lowest, until no more water comes out. Don't forget the toilet and outdoor shower.
- Then dump RV anti-freeze down all the drains and the toilet to keep the water out of the traps and lubricate your waste tank drain valves.
- I also keep all my faucets and low point drains open, my shower wands disconnected, and my hot water tank plug removed all winter. Any remaing water can then evaporate over the fall/winter.