Introduction KQF type air valve action of the rear end of the valve, the valve opens automatically when the pipeline before flushing gas discharge in order to ensure the normal operation of hydraulic equipment. Works KQF type air valve is the use of float its own gravity and buoyancy to achieve on and off. When there is no liquid pipe (or container), the air valve rely on float its own gravity to open it. The duct and the atmosphere; when the pipeline filled, the liquid level rises, the air exhaust duct, while float due to the buoyancy and the air valve is closed, and automatic bleed function. Air valve mounting dimensions schematic air valve installation and adjustment 1, the installation KQF type air valve must be installed in a horizontal plane, should make floats around hydrostatic area, avoid lateral impact water buoy. Otherwise it will cause the float shaft bending deformation, so that the air valve does not work properly. 2. Adjust the greater buoyancy buoy rising too fast, the air inside the pipe can not be completely drained, the following adjustments: ① Loosen the adjusting screw lock nut 1 clockwise rotation of the adjusting screw 1 to increase the thimble three pairs of buoys pressure shaft, the float rises to slow the speed after adjustment is completed, you can lock the adjusting nut on the screw 1. ② If the adjusting screw when adjusted limit, still can not solve the phenomenon, can be achieved by the collar 2 adjust the adjustment. 1 with the same adjustment method. Buoys close too slow, spillage is higher, the following adjustments: ① Loosen the adjustment lock nut on the screw 1, turn adjustment screw 1, to reduce the pressure thimble three pairs buoy axis, to increase speed when the float rises, After the adjustment, lock the adjusting nut to screw 1 on. ② If the adjusting screw when adjusted limit, still can not solve the phenomenon, can be achieved by the collar 2 adjust the adjustment. The same adjustment method with ①.