一、进口不锈钢法兰止回阀产品概述

进口不锈钢法兰止回阀，Stainless steel flanged check valve，是指阀体采用不锈钢304或者316材质，设计和制造按照美国API或者ANSI 标准，法兰采用CLASS150LB-2500LB的连接方式的止回阀，不锈钢材质具有耐酸碱耐腐蚀的性能，所以适用于各种腐蚀性介质的管道，防止介质倒流。

美国威盾VTON不锈钢法兰止回阀主要产品有：不锈钢法兰止回阀，不锈钢升降式止回阀，不锈钢旋启式止回阀，水用不锈钢法兰止回阀，油用不锈钢法兰止回阀，蒸汽用不锈钢法兰止回阀；磅级止回阀支管两端为焊结结构，焊结坡口可按标准或用户要求制作，不锈钢法兰磅级止回阀适用于火电厂、石油化工、冶金等高温高压的水、蒸气、油品、过热蒸汽的管道上作防止介质回流的装置。

Stainless steel flanged check valve refers to a check valve with a valve body made of stainless steel 304 or 316 material, designed and manufactured according to American API or ANSI standards, and a flange connection method of Class150LB-2500LB. The stainless steel material has acid, alkali, and corrosion resistance, making it suitable for pipelines with various corrosive media to prevent media backflow.

The main products of Weidun VTON stainless steel flange check valves in the United States include: stainless steel flange check valves, stainless steel lift check valves, stainless steel swing check valves, stainless steel flange check valves for water, stainless steel flange check valves for oil, and stainless steel flange check valves for steam; The two ends of the branch pipe of the pound level check valve are welded structures, and the welded grooves can be made according to standards or user requirements. Stainless steel flange pound level check valves are suitable as devices to prevent medium backflow in high-temperature and high-pressure water, steam, oil, and superheated steam pipelines in thermal power plants, petrochemicals, metallurgy, and other industries.

二、进口不锈钢法兰止回阀产品参数

1、口径：DN15-3000，1/4-100寸

2、压力：PN0.6-PN320；Class150LB-2500LB；JIS10K-20K

3、温度：-196℃-550℃

4、阀体材质：不锈钢304、316

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

8、使用介质：水、蒸汽、油品等

三、进口不锈钢法兰止回阀标准规范
设计制造标准：API 6D
结构长度标准：ASME B 16.10
连接法兰标准：ASME B 16.5
压力温度等级：ASME B 16.34
试验检验标准：API 698

四、进口不锈钢法兰止回阀结构图