Valves should be installed with the disc in the closed or almost closed position. This will prevent damage to the disc sealing edge.
Valves should be installed with the disc in the closed or almost closed position. This will prevent damage to the disc sealing edge.
安装阀门时，阀瓣应该处于关闭或几乎关闭的位置。这样可以防止阀瓣密封边缘的损坏。