shield knife gate valve

此阀门适用于户外环境恶劣的条件下使用，在阀体上附加一个防护罩起着保护闸板不受外界环境的污染腐蚀，从而增强了闸板的使用寿命。其密封原理是通过闸板在关闭到底时，闸板斜切面碰到阀体上的锲块使得闸板紧靠密封面起到密封效果，并且闸板底部的斜切面具有切断介质的功能，使得阀门不易受介质的堵塞卡阻。其结构可以做成硬密封、软密封，可以很可以根据客户对密封要求选型。软密封是由金属压套把橡胶密封圈封套反锁在阀座密封槽内，使得密封圈不会脱落，并且取下金属压套可以很方便的更换橡胶密封圈，这样不仅提高了阀门使用寿命，并且也大大节省了用户的使用成本。该阀门具有启闭灵活，结构轻小，密封性能，并且软密封的密封橡胶条可以很方便的更换等特点，不仅增长了阀门使用寿命，也大大节省了资源的浪费。

This valve ,whose shield is attached to body to keep away the gate's corruption from outside condition,can be used in outside hard conditions thus increasing the life of the gate. The sealing principle is that when the gate is closed to the end ,oblique plane of gate valve encounters wedge block of gate to close to achieve sealing effect, which makes the valve less blockage media . Its structure can be made into a hard seal, soft seal. Sealing requirements base on customer's selection. Soft-seal is a metal pressure sleeve to rubber ring sealed envelope locked in the valve seat tank, making ring will not fall off, and it's convenient to take off metal pressure sleeve to replace the seat seal,besides ,not only improve the valve's service life, but also saves the user's cost . The advantage of gate valves are:open and close flexibly ,light in structure,excellence in sealing, and the soft seal rubber seal can be very easy to replace and so on, not only increases valve's life, but also saves a waste of resources.

产品型号：QBZ73H-10C、QBZ73X-10C、QBZ73W-10P

外型结构:凸耳、梅花、圆型

公称通径范围：DN50-DN1200

公称压力范围：国标、美标、日标、德标、英标                        

材质：铸钢、不锈钢、

闸板材质：2Cr13、201、304、316、316L

连接形式：法兰、对夹

阀座密封圈：丁腈橡胶、三元乙丙橡胶、氟橡胶

堆焊2Cr13、不锈钢、硬质合金

填料密封：含油四氟盘根

适用介质：污水、粉体颗粒、纸浆、矿浆

Model:QBZ73H-10C、QBZ73X-10C、QBZ73W-10P

Exterior structure: lugged、   p lum、round

Nominal diameter:DN50-DN1200

Nominal pressure:national standard 、American standard 、Japanese standard、German standard 、 British standard

Material:cast steel、stainless steel

Disc:2Cr13、201、304、316、316L

Connection: flange 、wafer

Seat ring :NBR、EPDM、 vition、   2Cr13、stainless steel、hard alloy

Sealing filler: PTFE