氣動角座閥可（kě）分（fèn）為四種形態

第一種：單作（zuò）用常閉型

工（gōng）作原理：

根據彈簧複位（wèi）達到閥門（mén）關閉的作用，工作時隻需安（ān）裝一根氣管，通氣閥門打開，失氣閥門自動關閉。在常壓常溫的情況下方便安（ān）裝使用。

FIRST: SINGLE-ACTING NORMALLY CLOSED TYPE

Working principle:

According to the spring retum to achieve the function of closing the valve, only one air pipe needs to be installed during work, the vent valve is opened, and the lost gas valve is automatically closed. It is easy to install and use under normal pressure and normal temperature.

第二種：單作用常開型

工作原理：

根據通氣（qì）關閉閥門，工作（zuò）時隻需安裝（zhuāng）一根氣管，通氣（qì）閥門關閉，失氣閥門自動打開，在高溫高壓的情（qíng）況，需要長（zhǎng）期打開（kāi）閥門的情況下可選用。

SECOND: SINGLE ACTING NORMALLY OPEN TYPE

Working principle:

According to the ventilation, the valve is closed. Only one air pipe is required to be installed during operation. The ventilation valve is closed and the lost gas valve is automatically opened. It can be used in the case of high temperature and high pressure and the need to open the valve for a long time.

第（dì）三種：雙作用帶彈簧關閉型（推薦）

工作原理：

根據通氣控製閥門開關，工作時需安裝兩根（gēn）氣管，遇緊急情況（列停（tíng）電（diàn））閥門可自動關閉，用戶還可與根據使用情（qíng）況來自（zì）由安裝閥門方（fāng）向，（在惡劣條件下介質高（gāo）溫（wēn），高壓，氣（qì）缸壓力小（xiǎo），防水錘等安裝使用）控（kòng）製（zhì）更精確，更穩定。

THIRD: DOUBLE ACTING WITH SPRING CLOSING TYPE (RECOMMEND)

Working principle:

According to the spring retum to achieve the function of closing the valve, only one air pipe needs to be installed during work, the vent valve is opened, and the lost gas valve is automatically closed. It is easy to install and use under normal pressure and normal temperature.

第四種：雙作用（自由態）

工（gōng）作原理：

根（gēn）據通氣（qì）控製（zhì）閥門開關，工作時需安裝兩根氣管，在控製執行器壓力較低的情況下使用，用戶可根據（jù）使用情況（kuàng）打開閥門後屬於常開狀態。在（zài）低壓低溫的情況下使用雙作用自由（yóu）態可延長閥門壽命。

FOURTH: DOUBLE ACTING(FREE STATE)

Working principle:

According to the ventilation control valve switch, two air pipes need to be installed during operation, and it is used when the pressure of the control actuator is low. The user can open the valve according to the use situation and belong to the normally open state. The double-acting free state can prolong the life of the valve under the condition of low pressure and low temperature.