Patent ID: 7481238

Claim:
An automatic degassing valve comprising: a housing of resinous corrosion resistant material, the housing having a single wall and defining a chamber having an inlet opening at the lower end of the housing for receiving a liquid and the housing having a degassing vent disposed adjacent the upper end of the housing for venting gas from the liquid; a float of resinous corrosion resistant material within the housing, the float being free of spring bias and being movable by liquid pressure alone between a first level when there is excessive gas in the chamber and a second level when liquid floating the float indicates no gas need be vented from the chamber; a normally open vent closure of resinous corrosion resistant material for seating against and sealing the vent; a linkage of resinous corrosion resistant material extending between the normally open vent closure and the float for causing the normally open vent closure to seat against the vent when the float is at the second level, and first and second elastic bands for retaining the linkage adjacent to the degassing vent and retaining the linkage on the float, the elastic bands being made of resinous corrosion resistant material.