Are these parts dishwasher safe? You may wash flanges, tubing, and backflow protectors with dishwasher (top rack). But we do not recommend using dishwasher to clean the duckbill valves. Please hand wash the valves. By Lisa Chiang|2019-10-30T07:10:29+00:0030 10 月, 2019|0 條評論 Share This Article FacebookTwitterLinkedInRedditWhatsAppPinterestVkEmail: About the Author: Lisa Chiang 留言 取消回覆Comment Save my name, email, and website in this browser for the next time I comment.