Material ABSPercompatible withmance Normal percompatible withmance under 25 to 60 ,Strong resistance to acid, alkali, salt corrosion abilityApplication Check valve is used in fluid system to prevent reverse flow fluid, or used in pneumatic system to prevent reverse flow of compressed airDiameter 10mm/0.39 inchTotal length 43mm/1.69 inchOpening pressure: 0.5 KpaMaximum back pressure: 0.3 MpaColor: black + whitematerial, safe and nontoxic;Strong resistance to acid, alkali, salt corrosion ability;Package include:2x Check ValveOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.