智能水表增加的閥門，設計采用的結構形式多樣，有先導閥門、球閥、陶瓷閥、機械閥等等。

The added valves of intelligent water meter are designed in various forms, such as pilot valves, ball valves, ceramic valves, mechanical valves and so on.

1、先導閥

1. Pilot Valve

先導閥應該說是利用了一種巧力，也就是四兩撥千斤的原理。利用開啟一個小孔，將上端和下端的水壓進行調整。當水壓平衡時，閥門就會自動開啟，當水壓不平衡時閥門就會自動關閉。先導閥顧名思義就是先導通一個小孔，利用很小的力，然后在將閥門開啟。應該說先導閥是智能水表其中一種比較理想的設計。因為開啟閥門和關閉閥門需要的時間很短，甚至是一瞬間的事情。而水壓對閥門是乎沒有太大的影響，因為，先導閥本身就是依靠水壓差來達到開啟閥門和關閉閥門的。假如采用電磁閥作為驅動，則開啟和關閉閥門所需要的功率幾乎是恒定的。

Pilot valve should be said to use a kind of ingenuity, that is, the principle of four or two kilograms. By opening a small hole, the water pressure at the upper and lower ends is adjusted. When the water pressure is balanced, the valve opens automatically and closes automatically when the water pressure is unbalanced. Pilot valve, as its name implies, is to lead through a small hole, use very little force, and then open the valve. It should be said that pilot valve is one of the ideal design of intelligent water meter. Because it takes only a short time to open and close the valve, even for a moment. The water pressure has little effect on the valve, because the pilot valve itself relies on the water pressure difference to open and close the valve. If solenoid valve is used as drive, the power required to open and close the valve is almost constant.

2、球閥

2. Ball valve

球閥是自來水管道常用的一種手動閥門，由于是采用手動的，所以，在使用中其密封性能還是可以。但是一旦采用到智能水表上，這個閥門的工藝要求就提高了很多。

Ball valve is a kind of manual valve commonly used in tap water pipeline. Because it is manual, its sealing performance can still be used. But once the intelligent water meter is used, the technological requirements of the valve will be greatly improved.

3、陶瓷閥

3. Ceramic Valve

陶瓷閥是在手動冷熱水閥門的基礎上提升為智能水表閥門的一種結構，從原理上來說應該是完全可行的，只需解決壓力損失的技術問題，所以設計體積就較球閥要大多了。但是水壓幾乎對陶瓷閥的影響力很小，因為陶瓷閥是兩個陶瓷片，其中一個陶瓷片做旋轉運動，那么它克服的僅僅是兩個陶瓷片之間的摩擦力。所以，陶瓷閥是智能水表其中一種理想的設計結構。

Ceramic valve is a kind of structure which is lifted to intelligent water meter valve on the basis of manual cold and hot water valve. It should be completely feasible in principle. It only needs to solve the technical problem of pressure loss, so the design volume is much larger than that of ball valve. But water pressure has little influence on ceramic valves, because ceramic valves are two ceramic plates, one of which rotates, so it only overcomes the friction between the two ceramic plates. Therefore, ceramic valve is an ideal design structure of intelligent water meter.

4、機械閥

4. Mechanical Valves

機械閥是在陶瓷閥的基礎上，在閥門的密封處增加了機械密封裝置，徹底解決了被驅動桿的密封問題。機械閥采用了機械密封原理的提升設計，將整個閥門結構看成是一個機械密封裝置，其中沒有采用陶瓷材料，而是采用摩擦系數相對小的材料進行組合成閥門摩擦片。http://www.ckdxm.cn/

Mechanical valves are based on ceramic valves. Mechanical seals are added to the seals of the valves, which completely solves the sealing problem of the driven rod. Mechanical valves adopt the elevation design of mechanical seal principle, which regards the whole valve structure as a mechanical seal device, in which ceramic material is not used, but the material with relatively small friction coefficient is used to assemble the valve friction disc. Http://www.ckdxm.cn/