Ball for DN DN15mm ~ 1000mm (1 / 2 "-40"), nominal pressure PN1.0MPa ~ 25.0MPa, ANSI 150Lb-1500Lb, JIS 10K-40K, end flange, butt welding, socket welding, threaded connections such as form, structure, style and three for the two fixed-style ball or floating ball, the operation mode to manual, pneumatic and electric pole and processing all kinds of ball valve. 2 uses 2.1 The valve can be installed on the device or a pipe, open or close the flow channel, control the media flow. 2.2 for medium depends on the valve of the main material 2.2.1 carbon steel, alloy steel valves for water, steam, oil or other non-corrosive media. 2.2.2 Stainless steel valves for corrosive media. 2.3 The temperature depends on the valve seat material for a, PTFE -180 ℃ ~ +200 ℃ b, PTFE fiberglass clip -180 ℃ ~ +200 ℃ c, PTFE clip carbon fiber -180 ℃ ~ +200 ℃ d, Nylon -75 ℃ ~ +150 ℃ e, the metal -180 ℃ ~ +425 ℃ f, PPL -40 ℃ ~ +350 ℃ 3 valve 3.1 shows the typical structure of the structure shown in Figure 1, the basic structure of the products meet the standards required by the order. According to user needs, the valve can have a fire-resistant and anti-static structure. 3.2 The length of the valve structure, connecting the order form and dimensions are in line with the requirements of the appropriate standard. 3.3 valve gasket, packing and Japan and China Mallorca with considerable domestic product performance quality products, reliable seal. 4, 4.1 works for the lever handle manual valve, pneumatic valve by the pneumatic valves, electric valve electric device from the valve (part back to the transition) driver, so that rotary valve 90 ° to open or close the valve. 90 ° clockwise to close, counterclockwise 90 ° to open. 4.2 Manual operation of the valve stem when the handle and mark the location of the top trench parallel to the valve passage, the valve opens the valve channel perpendicular to the valve closes. 4.3 pneumatic or electric operation of the valve's open or closed, the pneumatic valve electric device or valve position indicator on the device to mark. 4.4 pneumatic valve pneumatic valve electric valve electric device and the device described in principle and operation of pneumatic devices and related electrical equipment specifications. 5 storage, maintenance, installation, and maintenance of 5.1 for the storage and maintenance of 5.1.1 should be blocked at both ends of the valve, to prevent dust, dirt and other intrusion. 5.1.2 Valves should be stored in dry, ventilated room. 5.1.3 Long-term storage of the valve should be checked regularly to remove dirt, rust and oil in the processing of surface coating. 5.2 Installation 5.2.1 Installing the valve should be carefully examined before the main examination items are: a, check valve cavity, in particular, check whether there is dirt sealing surface dirt, and check the sealing surface for damage. b, Check whether the appropriate stem compression packing, make sure packing seal, but without prejudice to the flexible stem rotation. 5.2.2 should be installed carefully check mark whether the valve in line with requirements. 5.2.3 The valve should be checked after installation bolts are evenly tightened connections. 5.2.4 the position of the valve installation should pay attention to operation and maintenance of facilities. 5.2.5 valve installed in the system or piping pressure test should be in the fully open position. 5.3 5.3.1 use, the valve should be fully on or off, adjust the flow does not allow partially open for use. 5.3.2 manually open or close the valve, the operator should pay attention to the operating position and hold the handle, so as not opening and closing parts of the fluid velocity distribution is very inconsistent, opening and closing piece on the closure of the pressure to produce a large torque, rapid closure of the valve, the handle suddenly rushed into the closed position, the operator caused the injury. 5.3.3 Manual operation of the valve operating handle switch by operating the valve torque required to design, manufacture, not with users or other tools to aid leverage to increase switching moments. 5.4 Maintenance 5.4.1 The valve should be used in the regular inspection, maintenance, major projects are: a, check the sealing surface wear. Any damage should be repaired or replaced. b, check the gaskets, packing for damage or failure. If damage or failure should be replaced. But with the pressure should not replace the packing case. c, check all connecting bolts are tight, the handle is connected normally. 5.4.2 repair the valve assembly after the collapse, sealing performance test should be carried out. Tests according to relevant standard requirements, and detailed records in order to test for future reference. 5.5 pneumatic valve pneumatic valve electric valve electric device and equipment storage, maintenance, installation, use and maintenance, see the valve pneumatic device and electric device instructions.