We must carefully observe the direction of rotation when installing valves. If the valve is installed in the opposite direction, it will affect the effectiveness of the installation. The valve installer should check the directional markings on the valve body during installation. If there are no directional markings, they should identify them based on the principle of the valve itself. If you need hardware valve castings, building hardware castings, and civilian hardware castings, please call the hotline 06356177765. Linqing Shunde Precision Casting Co., Ltd. welcomes everyone to visit and guide.