1. Check whether the model and parameters of the pneumatic valve meet the site installation requirements and technical requirements.

2.检查气动阀门的气缸、位置指示器，确保无损伤。

2. Check the air cylinder and position indicator of the pneumatic valve to ensure there is no damage.

3.必须把气动阀的管道清洗、吹扫干净；如介质内有杂质，在阀前管道上应加装过滤阀。

3. The pipeline of pneumatic valve must be cleaned and purged; If there are impurities in the medium, a filter valve should be installed on the pipeline in front of the valve.

4.按气动阀阀体上箭头指示的方向安装（顺流安装）把气动阀门的接口与管道连接上，并确保连接处良好的密封。

4. Install in the direction indicated by the arrow on the pneumatic valve body (downstream installation), connect the interface of the pneumatic valve with the pipeline, and ensure that the connection is well sealed.

5.如加装电磁阀，注意连接处确保密封良好。

5. If a solenoid valve is added, pay attention to ensure that the connection is well sealed.

6.需要焊接连接时，避免高温传到气动阀的填料等处。

6. When welding connection is required, avoid high temperature being transmitted to the packing of pneumatic valve.

二、气动阀安装及加装电磁阀注意事项

2、 Precautions for installing pneumatic valve and adding solenoid valve

1.必须保证流体、气源洁净，以防堵塞电磁阀或气缸活塞。

1. The fluid and air source must be clean to prevent blocking the solenoid valve or cylinder piston.

2.电磁阀的线圈带电正常工作时发热较高，请勿触摸。

2. When the coil of the solenoid valve is electrified and works normally, the heat is high. Do not touch it.

3.电磁阀的线圈带电时，禁止取下，以防止触电。

3. When the solenoid valve coil is electrified, it is forbidden to take it down to prevent electric shock.

4.电磁阀的线圈、插座、电磁管及连接部分，严禁击打碰撞，以免损坏。

4. The coil, socket, solenoid pipe and connecting part of the solenoid valve shall not be hit or collided to avoid damage.

5.电磁阀的线圈带电时，严禁覆盖，以防过热烧毁。

5. When the solenoid valve coil is electrified, it is forbidden to cover it to prevent overheating and burning.

6.电磁阀的实际电源电压不能超出公差范围。

6. The actual power supply voltage of the solenoid valve shall not exceed the tolerance range.

7.介质工作压力，工作温度、黏度，不得超出规定的范围。

7. The working pressure, temperature and viscosity of the medium shall not exceed the specified range.

三、维护方法

3、 Maintenance method

1.气动阀拆卸前，必须排空汽缸中的流体，泄去阀门内介质压力；如果介质是高温、高压易燃、易爆，有毒或者有腐蚀性，必须彻底，以防造成人身、设备以外伤害。

1. Before disassembling the pneumatic valve, the fluid in the cylinder must be drained and the medium pressure in the valve must be relieved; If the medium is high temperature, high pressure, flammable, explosive, toxic or corrosive, it must be completely removed to prevent personal and equipment injury.

2.气动阀拆卸步骤：

2. Disassembly steps of pneumatic valve:

A 拆汽缸：取下锁紧环，向上提起并取下汽缸后，可以看见活塞、弹簧、位置指示器、阀杆等部件。

A Dismantle the cylinder: remove the locking ring, lift up and remove the cylinder, and then you can see the piston, spring, position indicator, valve rod and other components.

B 拆阀体：用扳手卡在阀盖根部进行旋转，即可拆卸阀体，看到阀体内件。

B Dismantle the valve body: use a wrench to clamp it at the root of the bonnet and rotate it to disassemble the valve body and see the valve body internals.

C 拆密封件：在拆开阀体后，可以看到在阀杆末端的密封件，拧下固定密封件的螺丝，即可拆下密封件。

C Dismantle the seal: after disassembling the valve body, you can see the seal at the end of the valve rod. Unscrew the screw that fixes the seal to remove the seal.

3.根据故障分析，对拆开的阀门进行相应的处理。

3. According to the fault analysis, handle the disassembled valve accordingly.

4.处理完毕，参照拆卸步骤一次安装。

4. After handling, install it once according to the removal procedure.

5.密封件、锁紧环、密封环和弹簧等部件一定要安装到位，拧紧连接件时，用力要均匀。拆卸和安装过程中要注意不要碰伤膜片和阀座。

5. The components such as seals, locking rings, sealing rings and springs must be installed in place. When tightening the connectors, the force should be even. Pay attention not to damage the diaphragm and valve seat during removal and installation.

6.维修好的阀门，必须做试压和渗漏等试验，没有异常后才能再次安装使用。

6. The repaired valve must undergo pressure test and leakage test, and can be installed and used again after there is no abnormality.