Thermal Vacuum Valve
- Remove valve from manifold and attach hoses to 2 lower ports. Cap upper port on valve. Submerge valve in container of water.CAUTION: Do not let water enter valve.
- With water temperature below 50°F (10°C), valve should be closed and air should not pass through hoses. With water above 68°F (20°C), valve should be open. If not, replace valve.