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4.2 For the manual valve, the valve shall open when the handle and the location marking groove on top of the valve are parallel with the port of the valve and the valve close when they are vertical with the port.
4.3The open and close of pneumatic or electric valve is marked by the location indicator that installed on the pneumatic device or electric device of the valve.
4.4 The operating principle and instruction for the pneumatic and electric device of the valve, see the relevant instruction for pneumatic and electric device.
5 Store, servicing, installation, use and maintenance
5.1 Store and servicing
5.1.1 Both ends of the valve should be clogged with the plug cock fully opened to prevent the incursion of dust and dirt, etc.
5.1.2 The valve shall be stored in dry room with good ventilation.
5.1.3 The valve, that is stored for long time, shall checked periodically to remove the dirt and coating with rustproof oil on the machined surface. |
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