一、进口气动法兰蝶阀产品概述

进口气动法兰蝶阀（美国威盾VTO），Pneumatic flange butterfly valve，也叫气动开关蝶阀，气动控制蝶阀，气动执行器蝶阀，气动蝴蝶阀，气动蝶板阀，是指由气动执行器和法兰蝶阀组成，有气动执行器驱动阀杆对蝶阀实现开启和关闭的阀门，可以实现远程智能控制和开关调节。

Pneumatic flange butterfly valve (VTO), also known as pneumatic switch butterfly valve, pneumatic control butterfly valve, pneumatic actuator butterfly valve, pneumatic butterfly valve, pneumatic butterfly plate valve, refers to a valve composed of a pneumatic actuator and a flange butterfly valve, with a pneumatic actuator driving the valve stem to open and close the butterfly valve. It can achieve remote intelligent control and switch adjustment.

二、进口气动法兰蝶阀技术参数

公称通径：DN50-600（mm）

公称压力：1.0-1.6MPa

连接法兰：ANSI、API  JB/T74-90   GB9113.1-9113.26

连接方式：对夹、法兰

阀体材料：HT200、QT400、不锈钢

阀板材料：QT400、铝青铜、尼龙11、不锈钢

阀座：NBR、EPDM

可选配件：气动执行器、手操机构、电器定位器、限位开关、电磁换向阀、气源处理三联件

适用介质：水、污水、空气、天然气、油品、一般化学介质等。

三、进口气动法兰蝶阀产品特点

1、气动执行器采用挤压的高强度铝质缸体，内表面细磨精加工及硬质阳极化处理，摩擦系数小，使用寿命长，抗腐蚀性能强；双活塞齿轮齿条式设计，结构紧凑、安装位置对称、改变输出轴转向方便，使用寿命长、动作迅速；高精度齿轮和齿条，啮合间隙小、精度高，输出功率大；全面符合最新的国际规范：输出轴槽、螺孔；顶部安装孔尺寸符合NAMUR标准；气源接口尺寸符合NAMUR标准；底部安装孔尺寸符合ISO5211、DIN3337标准,方便安装电磁阀、限位开关等附件。

2、安装双作用气动执行器和二位五通电磁换向阀，可以控制阀门的开和关；安装单作用气动执行器和二位三通电磁换向阀，不但可以控制阀门的开和关，而且能在气源发生故障时，阀门会自动停在预设的开或关的安全位置。

1. The pneumatic actuator adopts a high-strength extruded aluminum cylinder body, with fine grinding and hard anodizing treatment on the inner surface, low friction coefficient, long service life, and strong corrosion resistance; Double piston toothed gear rack design, compact structure, symmetrical installation position, easy to change output shaft direction, long service life, and fast action; High precision gears and racks with small meshing clearance, high precision, and high output power; Fully comply with the latest international standards: output shaft groove, screw hole; The size of the top mounting hole complies with NAMUR standards; The size of the air source interface meets the NAMUR standard; The size of the bottom mounting hole complies with ISO5211 and DIN3337 standards, making it convenient to install accessories such as solenoid valves and limit switches.

2. Install a dual acting pneumatic actuator and a two position five way electromagnetic directional valve, which can control the opening and closing of the valve; Installing a single acting pneumatic actuator and a two position three-way electromagnetic directional valve not only controls the opening and closing of the valve, but also automatically stops the valve in the preset safe position when the air source fails.

四、进口气动法兰蝶阀外形尺寸              单位：mm