During the use of pneumatic valve, it is usually necessary to configure some auxiliary parts to improve the performance of pneumatic valve, or improve the use efficiency of pneumatic valve. Common accessories of pneumatic valve include: air filter, reversing solenoid valve, limit switch, electric positioner, etc. In pneumatic technology, air filter, pressure reducing valve and oil mist atomizer are assembled together to form a pneumatic triplet, which is used to purify and filter the air source entering the pneumatic instrument and reduce the pressure to the rated air source pressure supplied by the instrument, equivalent to the function of the power transformer in the circuit.

气动阀门配件种类：

Type of pneumatic valve accessories:

双动式气动执行器：对阀门开启和关闭的两位式控制。（双作用）

Double acting pneumatic actuator: two position control for valve opening and closing. (Double acting)

弹簧复位式执行器：在电路气路切断或故障，阀门自动开启或关闭。（单作用）

Spring return actuator: when the circuit gas circuit is cut off or fails, the valve will open or close automatically. (Single acting)

单电控电磁阀：供电时阀门打开或关闭，断电时阀门关闭或打开 (可提供防爆型)。

Single electric control solenoid valve: the valve is opened or closed when power is supplied, and closed or opened when power is off (explosion-proof type is available).

双电控电磁阀：一个线圈得电时阀门打开，另一个线圈得电时阀门关闭，有记忆功能 (可提供防爆型)。

Double electric control solenoid valve: the valve is opened when one coil is powered on and closed when the other coil is powered on, with memory function (explosion-proof type is available).

限位开关回讯器：远距离传送阀门的开关位置的信号 (有防爆型)。

Limit switch annunciator: remote transmission of valve switch position signal (explosion-proof type).

电气定位器：根据电流信号 (标准4-20mA)的大小对阀门的介质流量调节控制(有防爆型)。

Electric positioner: adjust and control the medium flow of the valve according to the current signal (standard 4-20mA) (explosion-proof type).

气动定位器：根据气压信号 (标0.02-0.1MPa)的大小对阀门的介质流量调节控制。

Pneumatic positioner: adjust and control the medium flow of the valve according to the size of the air pressure signal (0.02-0.1MPa).

电气转换器：将电流信号转换成气压信号，与气动定位器配套使用 (有防爆型)。

Electrical converter: convert the current signal into the air pressure signal, and use it together with the pneumatic positioner (explosion-proof type).

气源处理三联件：包括空气减压阀、过滤器、油雾器，对气源稳压、清洁、运动部件润滑作用。

Air source treatment triplet: including air pressure reducing valve, filter and oil mist collector, which can stabilize and clean the air source and lubricate moving parts.

手动操作机构：自动控制在不正常情况下可以手动操作。

Manual operating mechanism: the automatic control can be operated manually under abnormal conditions.

气动阀门配件选型：

Selection of pneumatic valve accessories:

气动阀门是复杂的自动化控制仪表，由多种气动元件组成，用户需根据控制需要，进行详细选择。

Pneumatic valve is a complex automatic control instrument, which is composed of a variety of pneumatic components. Users need to make detailed selection according to the control needs.

1、气动执行器：①双作用式、②单作用式、③型号规格、④动作时间。

1. Pneumatic actuator: ① double acting, ② single acting, ③ model and specification, ④ action time.

2、电磁阀：①单控电磁阀、②双控电磁阀、③使用电压、④防爆型。

2. Solenoid valve: ① single control solenoid valve, ② dual control solenoid valve, ③ applied voltage, ④ explosion-proof type.

3、信号反馈：①机械式开关、②接近式开关、⑧输出电流信号、④使用电压、⑤防爆型。

3. Signal feedback: ① mechanical switch, ② proximity switch, ⑧ output current signal, ④ applied voltage, ⑤ explosion-proof type.

4、定位器：①电气定位器、②气动定位器、⑧电流信号、④气压信号、⑤电气转换器、⑥防爆型。

4. Positioner: ① electric positioner, ② pneumatic positioner, ⑧ current signal, ④ air pressure signal, ⑤ electrical converter, ⑥ explosion-proof type.

5、气源处理三联件：①过滤减压阀、②油雾器。

5. Air source treatment triplet: ① filter pressure reducing valve, ② oil mist atomizer.

6、手动操作机构。

6. Manual operating mechanism.

气动阀门的安装与使用

Installation and use of pneumatic valve

（1）气动阀门在安装使用之前，对阀门进行安装前的检查和开关运行试验。只有在运行动作正常的条件下，才能安装使用。

(1) Before the pneumatic valve is installed and used, the valve shall be inspected before installation and tested for opening and closing operation. It can be installed and used only when the operation is normal.

（2）气动阀门的安装要尽可能使阀门与管路法兰同心，并加支撑固定。不能使球阀受其它外力作用，以免损坏阀门的中密封及阀门变形。造成阀门开关不灵及阀门的损坏而无法使用。

(2) The installation of pneumatic valve shall make the valve and pipeline flange concentric as far as possible, and shall be supported and fixed. The ball valve shall not be subjected to other external forces to avoid damage to the middle seal of the valve and deformation of the valve. The valve cannot be used due to inflexible opening and closing and damage of the valve.

（3）要保证气动球阀及气动元件所提供的动力气源是洁净，尽可能不带油污及水。清洁度应小于0.4微米。

(3) Ensure that the power air supply provided by the pneumatic ball valve and pneumatic components is clean and free of oil and water as much as possible. The cleanliness shall be less than 0.4 microns.

（4）接入气源之前，清洁供气管路，气源接口和开关等器件，以防由于管路不清洁带上污物和泥沙冲入气动执行单元而造成故障。

(4) Before connecting to the air source, clean the air supply pipeline, air source interface, switch and other devices to prevent the failure caused by the uncleaned pipeline with dirt and sediment rushing into the pneumatic actuating unit.

（5）气动执行器、电磁阀、定位器、过滤器、减压阀等的连接，可用铜管或尼龙管，为以防防尘及减小噪声，排气口应安装消声器或消声节流阀。

(5) The connection of pneumatic actuator, solenoid valve, positioner, filter, pressure reducing valve, etc. can be made of copper pipe or nylon pipe. In order to prevent dust and reduce noise, the exhaust port shall be installed with muffler or silencing throttle valve.

（6）安装好以后，对气动阀门应进行试验，给气动执行器加压额定值，压力为0.4～0.7mpa，对气动球阀进行开关试验，观察阀门的开闭情况。应转动灵活无卡阻现象。在开关如有卡阻现象可增高气压，反复开关使阀门调到开关灵活即可。

(6) After installation, the pneumatic valve shall be tested, the pneumatic actuator shall be pressurized to the rated value with the pressure of 0.4~0.7 mpa, the pneumatic ball valve shall be tested for opening and closing, and the opening and closing of the valve shall be observed. It shall rotate flexibly without jamming. If the switch is jammed, the air pressure can be increased. Repeated opening and closing can make the valve flexible.

（7）安装调试开关型气动阀时，先用手动装置进行（电磁阀上的手动按钮）调试、动作正常后在通电调试。

(7) When installing and debugging the switch type pneumatic valve, first use the manual device (the manual button on the solenoid valve) for debugging, and then conduct the power on debugging after the action is normal.

（8）气动阀门应定期进行维护保养阀杆转动处，应三个月加油（机油）一次。定期对气动执行单元和配合使用的空气过滤器进行放水、排污。正常的情况下六个月检查一次，每年检修一次。

(8) The pneumatic valve shall be maintained regularly at the rotating position of the valve stem, and oil (engine oil) shall be added once every three months. Regularly drain and blow down the pneumatic actuating unit and the air filter used together. Under normal conditions, the inspection shall be conducted once every six months and the maintenance shall be conducted once a year.