一、进口高压法兰止回阀

进口高压法兰止回阀High pressure flange check valve，适用于Class1500～2500Lb，工作温度-29～570℃的石油、化工、火力电站等各种工况的管路上，防止高压的介质倒流的阀门。适用介质为：水、油品、蒸汽等。

High pressure flange check valve is suitable for pipelines in various working conditions such as petroleum, chemical, and thermal power plants with a working temperature of -29~570 ℃ and a Class1500-2500Lb. It is a valve that prevents the backflow of high-pressure media. Applicable media include water, oil, steam, etc.

二、进口高压法兰止回阀参数

1、口径：DN15-3000，1/4-100寸

2、压力：PN100-PN320；Class150LB-2500LB

3、温度：-196℃-550℃

4、阀体材质：锻钢，不锈钢，铬钼钢

5、密封面：堆焊铬不锈钢、堆焊硬质合金、铬镍钛不锈钢

6、垫片：钢带石墨参缠绕、聚四氟乙烯

7、连接方式：法兰，螺纹、焊接

8、使用介质：水、蒸汽、油品等

三、进口高压法兰止回阀产品特点
1、高压法兰止回阀产品设计制造按ANSIB16.34、E101标准，可与进口设备配备使用。
2、高压法兰止回阀阀门中腔采用压力自紧式密封结构，内腔压力越高密封性能越好。支管两端为3.支管两端为对焊连接，适应不同的接管要求。
4、阀门耐压部件选用优质耐热合金钢制造，高温性能好，承受压力高，耐用、安全、可靠。
5、高压法兰止回阀阀瓣、阀座的密封面采用司太立（stellite）钴基硬质合金堆焊而成，耐磨、耐高温，抗擦伤性能好、使用寿命长。
6、高压法兰止回阀阀瓣围绕阀座外的销轴旋转，减少关闭时发生猛烈冲击。
7、高压法兰止回阀内装式的销轴结构，减小外泄漏点，使用更可靠。

1. The design and manufacturing of high-pressure flange check valves are in accordance with the ANSIB16.34 and E101 standards, and can be used with imported equipment.

2. The middle chamber of the high-pressure flange check valve adopts a pressure self tightening sealing structure, and the higher the inner chamber pressure, the better the sealing performance. The two ends of the branch pipe are 3. The two ends of the branch pipe are butt welded to meet different connection requirements.

4. The pressure resistant components of the valve are made of high-quality heat-resistant alloy steel, which has good high-temperature performance, high pressure resistance, durability, safety, and reliability.

5. The sealing surfaces of the high-pressure flange check valve disc and valve seat are made of Stellite cobalt based hard alloy overlay welding, which is wear-resistant, high-temperature resistant, with good scratch resistance and long service life.

6. The high-pressure flange check valve disc rotates around the pin shaft outside the valve seat to reduce violent impact during closure.

7. The internal pin shaft structure of the high-pressure flange check valve reduces external leakage points and makes it more reliable to use.