Installation environment: butterfly valves can be used indoors and outdoors, but corresponding materials shall be used in corrosive media and places prone to rust. Consult Zhongzhi valve for special working conditions.

设备场所：要安装在可操作、易于维护、检查和维护的场所。

Equipment site: it shall be installed in a place that can be operated safely and easy to maintain, inspect and maintain.

周围环境:温度-20℃~+70℃，湿度低于90%。安装前，根据阀门上的铭牌，检查阀门是否符合工况。注意：蝶阀不具备抗高压差的能力，不要让蝶阀在高压差下打开或持续流通。

Surrounding environment: temperature - 20 ℃ ~ + 70 ℃, humidity lower than 90%. Before installation, check whether the valve meets the working conditions according to the nameplate on the valve. Note: the butterfly valve does not have the ability to resist high pressure difference. Do not let the butterfly valve open or flow continuously under high pressure difference.

安装前，请管道中的污垢、氧化物等杂物。安装时请注意，介质的流向应与阀体上标明的流向箭头一致。

Before installation, please remove dirt, oxides and other sundries in the pipeline. During installation, please note that the flow direction of medium shall be consistent with the flow direction arrow marked on the valve body.

对准前后管道，使法兰接口平行，均匀锁紧螺钉。注意气动蝶阀不要在气缸控制阀上产生过大的配管应力。根据气缸控制阀的大小和重量，在配管上或对本体进行适当的支撑固定。

Align the center of the front and rear pipes, make the flange interface parallel, and lock the screws evenly. Note that the pneumatic butterfly valve shall not produce excessive piping stress on the cylinder control valve. According to the size and weight of the cylinder control valve, properly support and fix the pipe or the body.

维护注意事项。

Maintenance precautions.

日常检查:检查泄漏、异常噪音、振动等。

Daily inspection: check for leakage, abnormal noise, vibration, etc.

定期检查:定期检查阀门等系统部件是否有泄漏、腐蚀和堵塞，并进行维护、清洁和除尘、去除残留污渍等。

Regular inspection: regularly check whether the valve and other system components have leakage, corrosion and blockage, and carry out maintenance, cleaning, dust removal, removal of residual stains, etc.

分解检查:阀门应定期分解检修。分解检修时，应重新冲洗零件，异物、污渍和锈斑，更换损坏或磨损严重的垫片和填料，并修正密封面。检修后，阀门应重新进行水压试验，合格后才能重新使用。

Disassembly inspection: the valve shall be disassembled and overhauled regularly. During disassembly and maintenance, parts shall be flushed again, foreign matters, stains and rust spots shall be removed, gaskets and fillers damaged or seriously worn shall be replaced, and sealing surfaces shall be corrected. After maintenance, the valve shall be subject to hydrostatic test again and can be reused only after passing the test.

如果在检查气动蝶阀时发现流体泄漏，在确认性之前，请不要用手接触或靠近气缸控制阀。

If fluid leakage is found when checking the pneumatic butterfly valve, please do not touch or approach the cylinder control valve by hand until the safety is confirmed.