At higher temperature, the sealing performance is not as good as elastic gate valve or double gate valve;

楔式单闸板电动闸阀

Wedge type single ram electric gate valve

①结构较弹性闸阀简单；

① The structure is simpler than elastic gate valve;

②在较高温度下，密封性能不如弹性闸板阀或双闸板阀好；

② At higher temperature, the sealing performance is not as good as elastic gate valve or double gate valve;

③适用于易结焦的高温介质。

③ It is suitable for high temperature medium easy to coke.

弹性闸板电动闸阀

Elastic ram electric gate valve

它是楔式单闸板的特殊形式。与楔式闸阀比较，在高温时，密封性能好，且闸板在受热后不易被卡住；适用于蒸气、高温油品及油气等介质，并适用于开关频繁的部位。不宜用于易结焦的介质。

It is a special form of wedge single ram. Compared with wedge gate valve, it has good sealing performance at high temperature, and the gate is not easy to be stuck after heating; It is suitable for steam, high-temperature oil products, oil and gas and other media, and is suitable for places with frequent switching. It is not suitable for medium easy to coke.

双闸板式电动闸阀

Double gate plate electric gate valve

①密封性能较楔式闸阀好，如密封面的斜角度和阀座配合不十分准确时，仍具有较好的密封性；

① The sealing performance is better than that of wedge gate valve. If the inclined angle of sealing surface and valve seat are not matched accurately, it still has good sealing performance;

②闸板密封面磨损后，将球面顶心底部的金属垫换为较厚的即可使用，一般不必堆焊和研磨密封面，这点单闸板、弹性闸板难以做到。

② After the sealing surface of the ram is worn, the metal pad at the top and bottom of the spherical core can be replaced with a thicker one. Generally, it is not necessary to weld and grind the sealing surface, which is difficult for single ram and elastic ram.

③零件较其它形式的闸阀多；

③ More parts than other forms of gate valves;

④除适用于蒸气、油品等介质外，还适用于开关频繁的部位及对密封面磨损较大的介质，不宜用于易结焦的介质。

④ In addition to steam, oil and other media, it is also suitable for frequent switching parts and media with large wear on the sealing surface. It is not suitable for media prone to coking.

平行式电动闸阀

Parallel electric gate valve

①密封性较其它形式的闸阀差；

① The tightness is worse than other forms of gate valves;

②适用于温度及压力较低的介质；

② Suitable for medium with low temperature and pressure;

③除在两块闸板上装有固定板的闸板不易脱落外，凡用铅丝固定两块闸板的闸板易于脱落，使用不可靠。

③ Except that the ram equipped with fixed plates on the two rams is not easy to fall off, the Ram fixed with lead wire is easy to fall off and unreliable to use.

④闸板及阀座的密封面的加工及检修比其它形式的闸阀简单。

④ The processing and maintenance of the sealing surface of the gate and valve seat are simpler than other forms of gate valves.