一、进口对夹式升降止回阀概述

进口对夹式升降止回阀由阀体、阀瓣、弹簧等组成，采用对夹式连接方式，升降式结构，水平或垂直安装于管路系统，防止介质倒流的阀门。

美国威盾VTON对夹式升降止回阀具有结构短、体积小、质量轻；阀瓣关闭快速，水锤压力小；流道通畅，流体阻力小；动作灵敏，密封性能好。适用于公称压力PN10～PN420、Class150～Class2500；公称通径DN15～DN1200、NPS1/2～48；工作温度-196℃～540℃的各种管路上，用于防止介质倒流。通过选用不同的材质，对夹式止回阀可适用于石化、冶金、电力、轻工、食品等行业中水、蒸汽、油品、硝酸、醋酸、强氧化性介质及尿素等多种介质。

The clamp type lifting check valve is composed of a valve body, valve disc, spring, etc. It adopts a clamp type connection method and a lifting structure. It is installed horizontally or vertically in the pipeline system to prevent medium backflow.

VTON clamp type lifting check valve has a short structure, small volume, and light weight; The valve disc closes quickly and the water hammer pressure is low; Smooth flow channels with low fluid resistance; The action is sensitive and the sealing performance is good. Suitable for nominal pressures PN10~PN420, Class150~Class2500; Nominal diameter DN15~DN1200, NPS1/2~48; Used on various pipelines with working temperatures ranging from -196 ℃ to 540 ℃ to prevent medium backflow. By selecting different materials, the clamp type check valve can be suitable for various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media, and urea in industries such as petrochemicals, metallurgy, power, light industry, and food.

二、进口对夹式升降止回阀性能参数

三、进口对夹式升降止回阀结构图