An air valve includes a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet and an outlet; a seat mounted within the valve body and having an upper surface and a lower surface, the upper surface facing the outlet of the valve body, the u
An air valve includes a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet and an outlet; a seat mounted within the valve body and having an upper surface and a lower surface, the upper surface facing the outlet of the valve body, the upper surface and the lower surface defining a bore extending between the upper surface and the lower surface, the upper surface further defining a first sealing ridge and a second sealing ridge; and a float moveable within the valve body and engageable with the bore of the seat.
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1. An air valve comprising: a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet and an outlet;a seat mounted within the valve body and having an upper surface and a flat lower surface, the upper surface facing the outlet of the valve b
1. An air valve comprising: a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet and an outlet;a seat mounted within the valve body and having an upper surface and a flat lower surface, the upper surface facing the outlet of the valve body, the upper surface and the flat lower surface defining a bore extending between the upper surface and the flat lower surface, the bore having an inner edge, the upper surface further defining a first sealing ridge and a second sealing ridge, the first sealing ridge having a first thickness diameter, an innermost point of the first sealing ridge spaced from the inner edge by a first distance that is less than the first thickness diameter of the first sealing ridge and an outermost point of the first sealing ridge spaced from the second sealing ridge by a flat transition surface having a second distance that is less than the first thickness diameter of the first sealing ridge; anda float moveable within the valve body and engageable with the bore of the seat. 2. The air valve of claim 1, wherein the first sealing ridge extends between the second sealing ridge and the bore. 3. The air valve of claim 1, wherein the first sealing ridge and the second sealing ridge extend around the bore. 4. The air valve of claim 1, wherein the first sealing ridge and the second sealing ridge are circular. 5. The air valve of claim 4, wherein the first sealing ridge and the second sealing ridge are concentric. 6. The air valve of claim 1, wherein the bore of the seat is cylindrical. 7. The air valve of claim 1, wherein the upper surface of the seat is flat except for the first sealing ridge and the second sealing ridge. 8. The air valve of claim 1, wherein the first sealing ridge and the second sealing ridge contact the inner surface of the valve body. 9. The air valve of claim 8, wherein the first sealing ridge and the second sealing ridge contact a cover of the valve body. 10. An air valve seat comprising: an upper surface, the upper surface defining a first sealing ridge and a second sealing ridge, the first sealing ridge having a first thickness diameter;a flat lower surface; anda bore extending from the upper surface to the flat lower surface, the bore having an inner edge, the first sealing ridge and the second sealing ridge extending around the bore, an innermost point of the first sealing ridge spaced from the inner edge by a first distance that is less than the first thickness diameter of the first sealing ridge and an outermost point of the first sealing ridge spaced from the second sealing ridge by a flat transition surface having a second distance that is less than the first thickness diameter of the first sealing ridge. 11. The air valve of claim 10, wherein the first sealing ridge and the second sealing ridge extend around the bore. 12. The air valve of claim 10, wherein the first sealing ridge and the second sealing ridge are circular and concentric. 13. The air valve of claim 10, wherein the upper surface of the seat is flat except for the first sealing ridge and the second sealing ridge. 14. A method for venting air from a fluid system through an air valve comprising: moving a float away from a seat mounted within a valve body, the valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet and an outlet, the seat having an upper surface and a flat lower surface defining a bore extending between the upper surface and the flat lower surface, the bore having an inner edge, the upper surface facing the outlet of the valve body and defining a first sealing ridge having a first thickness diameter and a second sealing ridge, an innermost point of the first sealing ridge spaced from the inner edge by a first distance that is less than the first thickness diameter of the first sealing ridge and an outermost point of the first sealing ridge spaced from the second sealing ridge by a flat transition surface having a second distance that is less than the first thickness diameter of the first sealing ridge; andventing air from the fluid system through the outlet. 15. The method of claim 14, wherein the upper surface and the lower surface of the seat define a cylindrical bore through the seat, the bore approximating the profile of the outlet. 16. The method of claim 14, further comprising: sealing the outlet of the valve body by moving the float towards the seat into contact with the lower surface of the seat. 17. The method of claim 16, wherein the float is ball-shaped. 18. The method of claim 16, wherein: the float includes a flat top surface; andmoving the float towards the seat into contact with the lower surface of the seat includes the flat top surface sealably engaging the lower surface of the seat.
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