The check valve can stop the water from returning back to the pump or tank and keep it in the line. Widely used on pump and tank of water, oil. Good Application for the home, garden, industry.Tube Inner Diameter: 5.8mm / 0.23"; Tube Min Outer Diameter: 8mm / 0.32"; Tube Max Outer Diameter: 9.4mm / 0.37"; Overall Size: 18.8x45.7mm / 0.74"x 1.8"(D*H)Made from EPDM plastic material with good waterproof performance. Quick to install.Both ends connect to a hose directly.Please check the outer diameter before buying, make sure it will fit your hose.
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