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1.福州市自来水公司任青来稿“更换法兰和活接头密封垫新方法”,报导了该专利产品安装省时、省力。该密封垫是由一个厚密封垫和一个薄密封垫组成,分别安装在水表或阀门进、出水口两端密封面上。厚密封垫用橡胶制成,薄密封垫用石棉或弹性小的橡胶制成。更换密封垫时,厚密封垫先被置入压紧,其弹性好,压缩变形量大,使水表或阀门另一端与管子连接处间隙增大,再置入薄密封垫,并利用活接头套母或法兰螺栓来调整密封垫压缩变形量,以达到有效密封。
1. Ren Qing, from Fuzhou Water Supply Co., Ltd., “A New Method for Replacing Flanges and Union Seals”, reported that the installation of this patented product saves time and effort. The gasket is composed of a thick gasket and a thin gasket, which are respectively installed on the sealing surfaces of the water meter or the inlet and outlet of the valve. Thick gaskets are made of rubber and thin gaskets are made of asbestos or small rubber. When replacing the gasket, the thick gasket is first put into compression, its elasticity is good, the compression deformation is large, the gap between the other end of the water meter or the valve and the pipe is increased, and then the thin gasket is placed, and the joint is used. The female or flange bolts are used to adjust the compression deformation of the seal to achieve an effective seal.