DN Air Water Oil 1/4" BSPP Female Full Ports One Way Check Valve (Pack of 5)
https://m.media-amazon.com/images/I/416bPUl+FHL.jpg https://m.media-amazon.com/images/I/51NQ9fHUpVL.jpg https://m.media-amazon.com/images/I/51eKVuwj5rL.jpg
https://m.media-amazon.com/images/I/416bPUl+FHL._SX38_SY50_CR,0,0,38,50_.jpg https://m.media-amazon.com/images/I/51NQ9fHUpVL._SX38_SY50_CR,0,0,38,50_.jpg https://m.media-amazon.com/images/I/51eKVuwj5rL._SX38_SY50_CR,0,0,38,50_.jpg
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Kamileo
{"Package Dimensions": "1 x 1 x 1 inches", "Manufacturer": "Kamileo", "Item model number": "DN10904918", "Is Discontinued By Manufacturer": "No", "Date First Available": "November 5, 2018"}