拍门规格分圆形拍门和方形拍门两种，可根据出水口大小形状设计生产；拍门类别可分别为空心浮板式拍门和平板式拍门。拍门安装的配件：螺栓或膨胀丝采用不锈钢或经过防腐处理的碳钢；密封件采用橡胶或橡胶垫片。
There are two types of flap door: round flap door and square flap door, which can be designed and produced according to the size and shape of the water outlet; the categories of flap door can be hollow floating flap door and flat flap door respectively. Accessories for flap door installation: stainless steel or anti-corrosion carbon steel shall be used for bolts or expansion wires; rubber or rubber gasket shall be used for seals.