CAUTION: If the pressure seal gasket is not pulled up concentric to the body/bonnet top-bore axis, under lower pressure the gasket may not be properly seated.Consequently, leakage may occur.

• 警告：如果压力密封垫圈没有与阀体/阀帽顶部轴线处于同心为止，则垫圈在较低压力下可能不会适当固定，结果可能会产生泄漏。