截止阀

截止阀    Shut-off valve

    适用于公称压力PN16~420bar（class150~2500），工作温度≤620℃的石油、化工、制药、化肥、电力行业等各种工况的管路上，切断或接通管路介质。

其主要结构特点：

1、产品结构合理、密封可靠、性能优良、造型美观；

2、密封面堆焊Co基硬质合金，耐磨、耐蚀、抗擦伤性能好，使用寿命长；

3、阀杆经调质及表面氮化处理，有良好的抗腐蚀性及耐磨性能；

4、公称压力≥250bar（class1500）中腔采用自密封结构，密封性能随压力升高而增强，保证了密封性能；

5、阀门设有倒密封结构，密封可靠；

6、零件材质及法兰、对焊端尺寸可根据实际工况或用户要求合理选配，满足各种工程需要。

    It is suitable to cut off or connect the pipeline medium in pipelines with various working conditions such as nominal pressure PN16 ~ 420bar (class 150 ~ 2500) and working temperature ≤620 ℃.

Its main structural characteristics:

1. Reasonable product structure, reliable seal, excellent performance and beautiful appearance;

2. The sealing surface is welded with Co-based hard alloy, which has good wear resistance, corrosion resistance, abrasion resistance and long practical life;

3. The valve stem undergoes quenching and tempering and surface nitriding treatment, and has good corrosion resistance and wear resistance;

4. The self-sealing structure is adopted in the middle cavity with nominal pressure ≥250bar (class1500). The sealing performance is enhanced with the increase of pressure to ensure the sealing performance.

5. The valve is provided with an inverted seal structure, which is reliable in sealing.

6. Parts materials, flanges and butt-weld end dimensions can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.

技术参数  technical data

公称压力：ANSI 150~ANSI2500

公称通径：DN15~DN400

温度范围：-196℃~+620℃

适用介质：水、蒸汽、油品等

Technical data

Nominal pressure: ANSI 150 ~ ANSI600

Nominal diameter: DN15 ~ DN400

Temperature range: -196 ℃ ~ + 620 ℃

Applicable medium: water, steam, oil, etc.