The gasket face of the flange should squarely contact the face of the mating flange. 法兰垫圈面应该与配套法兰面均匀接触。
On special application, Pacific valves can be supplied with special end flange facings other than the raised face or ring joint. 对于特殊的应用环境,美国太平洋阀门可提供与凸面或环连接不同的特殊端口法兰面。