COVNA Products

COVNA 3 Way Mixing Diverting Electric Globe Control Valve

电动合流（汇流）和电动分流（分流）。它由集成三通阀体的PSL系列和3810系列直行程电动执行器组成。电动执行器内置伺服放大器，可通过输入控制信号（4-20mADC或1-5VDC）和电源精确调节阀门开度，从而有效控制压力、流量、液位和温度等参数。电动合流控制阀用于将两种流体合并成第三种流体，而分流控制阀可有效地将一种流体分离成两种不同的流体。

  • 型号：电动调节阀
  • 尺寸范围：1” 至 12”
  • 压力范围：1.6至6.4MPa
  • 材质：不锈钢、WCB

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COVNA铸钢电动执行器截止控制阀概述：

三通电动调节阀集成了三个 3610L 系列电动执行器和专用三通控制系统。该调节阀专为伺服系统无缝操作而设计，无需伺服放大器，简化接线，同时支持直接信号和电源控制。调节机构支持合流和分流功能，可在各种应用中有效取代传统的双阀配置和三通管道解决方案。它尤其适用于热交换器系统和简单的比例调节过程。

执行器参数：

模型额定输出功率速度mm/s技术参数
公共服务联盟361升公共服务联盟361升公共服务联盟361升公共服务联盟361升
201361LSA-0810008008000.254.2 4.2电源；AC220V 50HZ
输入信号：DC4-20mA DC1-5V
（屏蔽线信号线） 输出信号：DC4-20mA 防护等级：IP67
配手轮		电源：AC220V 50Hz
输入信号：DC4-20mA DC1-5V
（屏蔽线 信号线）：DC4～20mA 输出信号
防护等级：IP65
防爆标志 Exdll
带手柄
361LXA-08
202361LSA-2020002000年 2000年0.52.1 2.1
361LXA-20
204361LSA-3045003000 30000.53.5 3.5
361LXA-30
208361LSA-5080005000 500011.7 1.7
361LXA-50
312361LSC-651200065000.62.8
320361LSC-99200001000012

阀门参数：

DN二十五三十二40506580100125150200250300
座圈直径 mm二十五三十二40506580100125150200250300
额定电压8.5十三21三十四53851352103405358001280
公称压力（MPa）1.6,2.5,4.0,6.4
行程(mm)16二十五4060100
配电动执行器型号361LSA-20361LSB-30361LSB-50361LSB-65361LSB-99
输入信号4-20mAADC，1-5VDC
电源交流220V 50HZ
固有流动特性线性、等百分比、快开
固有调制比30:01:00
固有调制比四
法兰尺寸符合JB/79.1(2)-94、HG20592-97、GB、ANSI、JIS、DIN等标准
阀体材质WCB、304、316、WC6、镍、钛、哈氏合金、蒙乃尔合金等。
阀门材质304、316、420、镍、钛、哈氏合金、蒙乃尔合金等。
工作温度℃-40~230
系列类型常温型、中温型、波纹管密封型

性能指标：

项目索引值
基本误差%带361L±2.5；；带PSL±1.0
微分％带 361L±2.0；；带 PSL 1.0
死区 %带 361L±3.0；带 PSL 1.0
始终指向偏差 %电力驱动起点±2.5
结束±2.5
关闭电源起点±2.5
结束±2.5
可调范围50：1
额定行程偏差%2.5
泄漏按JB/T7387-94 IV级小于X10 -4 阀门额定容量

尺寸和重量：

DN二十五三十二40506580100125150200250300
左PN16185200220250275300350410450550670770
PN40190210230255285310355425460560740803
PN64200200240265295320370440475570752819
H1135152165180200220222265322362508563
一个225310
H 正常大气温度55556166067586386887290592095012031265
H 中温70770981282710271032103611201135116514851557
重量
（PN64 正常大气温度）		50557078110120150180310410650810
The actuator on my automated valve operates, but the valve won’t turn. Why?

Most likely the valve stem or actuator coupling is broken.

The electric actuator limit switches or the pneumatic actuator position stops are not correctly adjusted.

Probably because there is no air pressure to the solenoid or dirt has jammed it. Also, debris might be trapped inside the valve. Or, the air pressure is not sufficient to operate the actuator. Remember: measure air pressure at the actuator, not at the compressor.

Maybe. First, be sure that the actuator torque output is sufficient to turn the valve reliably. Second, you will have to fabricate a custom mounting bracket and coupling to connect the actuator to the valve.

The valve will stop somewhere between full open and close. When power is reapplied to the original circuit, the actuator will complete the cycle.

To make the change just remove the actuator from the valve and turn it, or the valve stem, 90 degrees and remount the actuator.

Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.

Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.

Check the electric wiring schematic that came with the actuator for the correct hookup. Sometimes a copy is inside the actuator cover. If it is missing, don’t guess about the connections. Call the manufacturer for a schematic.

The actuator is wired incorrectly (check the schematic accompanying the actuator), or the external control switch is not the correct type for the actuator.

Not unless you bought it with an optional speed control.

Actuators and solenoid valves require different types of electrical control switches. SPDT for actuators, SPST for solenoids. Check the actuator wiring schematic for the correct wiring and switch type.

Still have confused? Contact Us!
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