Sealed test is with balanced safe bridge pressure test device of floating

The utility model discloses a sealed test is with balanced safe bridge pressure test device of floating. Floating safety bridge pneumatic cylinder is fixed with the cylinder cap, safe bridge pressure release solenoid valve is fixed with floating safety bridge pneumatic cylinder, the test relief valve is fixed with the piston rod, the piston rod passes cylinder cap and safe bridge hinge joint, safe bridge compresses tightly O type circle and inlays in the recess of piston rod, it fixes with the piston rod to test the check valve of intaking, it is fixed that the check valve is intake in test entrance pressure switch solenoid valve and test, the air supply advances and lets out the conversion solenoid valve and fix with the cylinder cap, it is fixed that the check valve is intake to safe bridge water inlet solenoid valve and safe bridge, it is fixed that check valve and floating safety bridge pneumatic cylinder are intake to safe bridge. The utility model is suitable for a through the opening and closing of control solenoid, the motion that utilizes water pressure and pneumatic control piston rod reaches valve test pressure and acts on. The utility model discloses application method is simple, safe and reliable, and long service life, the cost is lower, resources are saved.