Check valve having snap-on clamping sleeve

Check valve having variable opening-force threshold

Check valve including means to permit selective back flow

Check valve including molded valve seat

Check valve mechanism

Check valve of fuel tank

Check valve of fuel tank

Check valve plate with anti-pressure surge device

Check valve pull assembly

Check valve retainer

Check valve seat and cage retainer

Check valve slantedly biased against pressure-imposing...

Check valve with a low inertia moving part for low or high press

Check valve with damping device

Check valve with dual locking mechanism

Check valve with hanger

Check valve with hydraulic damping system

Check valve with locked restraint mechanism

Check valve with locking key and pull cord

Check valve with multiple doors