Manual butterfly valve installation direction? Butterfly valve itself does not need to install the direction, mainly supporting the expansion of the need to install in the water direction. No installation direction, manual butterfly valve can be installed in any position on the pipeline, butterfly valve with transmission mechanism should be upright installation, the transmission mechanism to maintain the vertical state. (1) The installation of regulating valve overall should consider the following aspects: ①Safety: the safety of personnel and equipment during the installation. ② control performance: piping system pressure loss should be calculated with the size of the control valve pressure loss in consideration to ensure the required flow characteristics. Import and export should try to ensure adequate straight pipe section. ③ Installation location: There should be enough space to facilitate manual operation of the operator (including bypass operation) and to ensure the possibility of in situ disassembly and maintenance of regulating valves and accessories. ④ regulating valve group: usually in the process of piping are installed shut-off valve bypass valve and valve into a valve train to meet the continuous operation of equipment needs. Use the shut-off valve when servicing the regulator. Bypass valve adjustment. The following figure is recommended to adjust the valve group layout. (2) field installation and installation personnel should first recognize that the control valve is a sophisticated equipment, are not allowed to fall or fall collision, so as to avoid damage. Specific attention to the following points: ①The best vertical valve is installed vertically on the pipe. Large valve weight and vibration occasions should be added support frame. ② body to avoid the front and rear piping or reconcile the serious flange of different axis suffered excessive stress. ③ Before initial start-up and shut-down maintenance should first flush the piping system after the installation of regulating valve. Or install the transition filter in front of the valve. ④ In accordance with the flow direction of the arrow on the valve body to install the control valve. ⑤ valve should be installed in an ambient temperature of -20 ℃ ~ 60 ℃, relative humidity ≤ 95%, no serious corrosive gases in the environment.