Self-Sealing Type
Self-sealing knife gate valves get their name from the self-rebounding sealing and opening function of the seat following the movement of the gate plate.
1. The valve seat is hot-pressed from fully imported natural rubber, delivering outstanding wear resistance and stable rebound & elongation performance.
2. Double elastic metal rings are embedded inside the rubber liner, which significantly enhances the rubber’s wear resistance and rebound sealing performance.
3. Symmetrical dual rubber seats provide full isolation for the valve cavity, effectively preventing difficult operation and jamming caused by medium entering the cavity.
4. The straight-through flow passage design eliminates slag retention and blockage inside the valve, making the valve ideal for media containing dust, solid particles, gas-liquid mixtures or crystallizable substances.
5. The valve can be fitted with a blow-off port and is equipped with a bottom ash drain inspection port to enable on-line cavity cleaning and maintenance at any time.
6. All valve components adopt standard modular assemblies, allowing independent maintenance and replacement of individual parts.

■自密封

自密封刀型闸阀因阀座可随着闸板的开关自动回弹密封或开启而得名。

1 、其产品阀座采用纯进口天然橡胶热压形成耐磨性能极佳，回弹延伸性能稳定。

2 、橡胶内芯镶锲双层弹性金属圈可大幅度塑造橡胶的耐磨性及回弹密封性。

3 、对称双橡胶阀座设计对阀腔形成了全方位的隔离，可有效阻止介质进入阀腔带来开关困难卡顿等问题。

4 、阀腔流道采用直通式设计，使阀腔流道形成不存渣、不留渣、不卡渣的直通流道，特别适用各类含有粉尘、固体颗粒、气液体或易结 晶介质使用。

5 、阀门可装吹哨口， 自带下排灰检修口，可时刻在线清洗阀门腔体及维护等作业。

6、阀门所有配件均采用标准件模块化组合，可单独维护或更换。