Threaded seat rings for valves in services with high velocity (turbulent) flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.

• 如果阀门用在高速流体(湍流)或热循环应用环境中,则螺纹阀座环应该锁焊到阀体上,避免松落。请在订购时加以指定说明。