(ANSI,API)进口美标隔膜阀 主要性能 Main performance

ANSI,API美标隔膜阀的启闭件是一块膜片，膜片是一种富有弹性的材料，用螺栓连接在阀杆上,操作时上下移动，当膜片上升时阀打开，当膜片下降时，阀关闭，隔膜阀适用于开关及节流之用retz品牌 ANSI, API American standard diaphragm valve is a diaphragm. The diaphragm is a flexible material, which is bolted to the valve stem. It moves up and down during operation. When the diaphragm rises, the valve opens. When the diaphragm falls, the valve closes. The diaphragm valve is suitable for switching and throttling

(ANSI,API)进口美标隔膜阀 技术性能规范 Technical performance specifications

特点∶ Performance characteristics

1.气密好，无外部泄漏 Good air tightness and no external leakage

阀体与盖被中间隔膜隔开，使得隔膜上方的阀盖、阀杆等零件不受介质侵蚀。而且无外部泄漏或外界空气进入污染流体 The valve body and cover are separated by an intermediate diaphragm, so that the bonnet, valve stem and other parts above the diaphragm are not corroded by the medium. And there is no external leakage or outside air entering the contaminated fluid

2.阀座零泄漏 Zero leakage of valve seat

可挠性隔膜将流体隔断，因此阀座无泄漏  The flexible diaphragm blocks the fluid, so the valve seat has no leakage

采用橡胶隔膜时，即使流体内有些异物夹杂也能完全切断 When using rubber diaphragm, even if there are some foreign matters in the fluid, it can be completely cut off

3.耐蚀性･耐化学性优异 Excellent corrosion resistance and chemical resistance

通过橡胶、氟树脂等各种衬里阀体和丰富的隔膜材料相组合，可制造适合各种流体规格的阀，性价比优于特殊合金类材料 Through the combination of rubber, fluororesin and other lining valve bodies and abundant diaphragm materials, valves suitable for various fluid specifications can be manufactured, and the cost performance is better than that of special alloy materials

4..保养性优异 Excellent maintenance

采用“驱动部”、“隔膜”、“阀体”的三单元方式，拆解和装配方便 The three unit mode of "drive part", "diaphragm" and "valve body" is adopted, which makes disassembly and assembly convenient

采用顶部入口结构，因此无需将阀从管道上拆下，只要将阀体和阀盖的紧固螺栓和螺母卸下即可更换隔膜 The top inlet structure is adopted, so it is unnecessary to remove the valve from the pipeline. The diaphragm can be replaced by removing the fastening bolts and nuts of the valve body and bonnet

各单元具有兼容性，手动阀也能方便地改为自动化等方式  Each unit has compatibility, and manual valves can be easily changed to automation

结构 Structure

堰式隔膜阀：阀体内有一个屋脊形的隆起，隔膜与阀瓣接触，阀杆上、下运动并且通过阀瓣带动隔膜与屋脊接触以达到隔断通道的目的。隔膜与尾脊不接触时具有一定节流作用，行程短对隔膜挠变要求较低，无淤积介质的死角  Weir diaphragm valve: there is a ridge shaped ridge in the valve body. The diaphragm contacts the valve disc. The valve rod moves up and down and drives the diaphragm to contact the ridge through the valve disc to block the passage. When the diaphragm is not in contact with the tail ridge, it has a certain throttling effect, short stroke, low requirements for diaphragm deflection, and no dead angle of silting media.

直通式隔膜阀：阀体内部似直管形，阀门全开时介质直流无阻。因此流体阻力小，切断与流动能力佳，耐腐蚀切能包容颗粒状介质 Straight through diaphragm valve: the inside of the valve body is like a straight pipe, and the medium is direct and unobstructed when the valve is fully opened. Therefore, the fluid resistance is small, the cutting and flow capacity is good, the corrosion resistance is high, and the granular medium can be contained

角式隔膜阀：进口与出口呈90度角，阀体内转角处相当于堰式结构。具有改变介质90度流动方向的功能 Angle diaphragm valve: the inlet and outlet are at a 90 degree angle, and the inner corner of the valve body is equivalent to the weir structure. It has the function of changing the 90 degree flow direction of the medium

直流式隔膜阀：具有直流式截止阀和隔膜阀的特点。阀座与阀瓣密封，阀瓣上端有隔膜作为中法兰密封和填料密封，又起隔开阀体和阀盖作用，阀盖部分不接触介质。具有较高的承载能力和密封性能，流体流量呈线性，流通能力好，流阻小。但是结构复杂成本高，管道上安装需要考虑手轮特殊方向的擦做空间 Direct flow diaphragm valve: it has the characteristics of direct flow stop valve and diaphragm valve. The valve seat is sealed with the valve clack, and the upper end of the valve clack is provided with a diaphragm as the middle flange seal and packing seal, which also serves to separate the valve body and the bonnet, and the bonnet part does not contact the medium. It has high bearing capacity and sealing performance, linear fluid flow, good flow capacity and small flow resistance. However, the structure is complex and the cost is high, and the wiping space in the special direction of the handwheel needs to be considered for installation on the pipeline

流量特性图 Flow characteristic diagram

压力温度曲线 Pressure temperature curve