Essick Air Humidifier Bottle Valve Cap Fits Emerson Moistair, Kenmore 2-pack Go to amazon.com Related posts Thing need consider when find remedies humidifier parts? FeatureSold as a 2-PackContains two bottle caps with valve assemblyReplacement Part #'s: 509229-1, 822419-2Approx Outside Diameter of cap: 1.625" DescriptionMinistry of Warehouse 2pcs 509229-1 Humidifier Valve Caps for Emerson Moistair - Tank Cap - 2 Caps