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
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 |
| 201 | 361LSA-08 | 1000 | 800800 | 0.25 | 4.2 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 | |||||||
| 202 | 361LSA-20 | 2000 | 2000年 2000年 | 0.5 | 2.1 2.1 | ||
| 361LXA-20 | |||||||
| 204 | 361LSA-30 | 4500 | 3000 3000 | 0.5 | 3.5 3.5 | ||
| 361LXA-30 | |||||||
| 208 | 361LSA-50 | 8000 | 5000 5000 | 1 | 1.7 1.7 | ||
| 361LXA-50 | |||||||
| 312 | 361LSC-65 | 12000 | 6500 | 0.6 | 2.8 | ||
| 320 | 361LSC-99 | 20000 | 10000 | 1 | 2 | ||
阀门参数：
| DN | 二十五 | 三十二 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| 座圈直径 mm | 二十五 | 三十二 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| 额定电压 | 8.5 | 十三 | 21 | 三十四 | 53 | 85 | 135 | 210 | 340 | 535 | 800 | 1280 |
| 公称压力（MPa） | 1.6,2.5,4.0,6.4 | |||||||||||
| 行程(mm) | 16 | 二十五 | 40 | 60 | 100 | |||||||
| 配电动执行器型号 | 361LSA-20 | 361LSB-30 | 361LSB-50 | 361LSB-65 | 361LSB-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 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| 左 | PN16 | 185 | 200 | 220 | 250 | 275 | 300 | 350 | 410 | 450 | 550 | 670 | 770 |
| PN40 | 190 | 210 | 230 | 255 | 285 | 310 | 355 | 425 | 460 | 560 | 740 | 803 | |
| PN64 | 200 | 200 | 240 | 265 | 295 | 320 | 370 | 440 | 475 | 570 | 752 | 819 | |
| H1 | 135 | 152 | 165 | 180 | 200 | 220 | 222 | 265 | 322 | 362 | 508 | 563 | |
| 一个 | 225 | 310 | |||||||||||
| H 正常大气温度 | 555 | 561 | 660 | 675 | 863 | 868 | 872 | 905 | 920 | 950 | 1203 | 1265 | |
| H 中温 | 707 | 709 | 812 | 827 | 1027 | 1032 | 1036 | 1120 | 1135 | 1165 | 1485 | 1557 | |
| 重量 （PN64 正常大气温度） |
50 | 55 | 70 | 78 | 110 | 120 | 150 | 180 | 310 | 410 | 650 | 810 | |
The actuator on my automated valve operates, but the valve won’t turn. Why?
Most likely the valve stem or actuator coupling is broken.
Why doesn’t my valve open or close completely when the actuator operates it?
The electric actuator limit switches or the pneumatic actuator position stops are not correctly adjusted.
When I energize the solenoid on my pneumatic actuated valve, the valve won’t turn. How come?
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.
Can I buy an actuator from one manufacturer and mount it to a valve from another manufacturer?
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.
What happens if I lose power to my electric actuator in the middle of an actuation cycle?
The valve will stop somewhere between full open and close. When power is reapplied to the original circuit, the actuator will complete the cycle.
I ordered a fail open pneumatic actuated valve by mistake. I needed a fail closed one. What can I do?
To make the change just remove the actuator from the valve and turn it, or the valve stem, 90 degrees and remount the actuator.
I’ve installed my automated valve in the line, but now I don’t know if the valve is in the open or closed position. How can I find out?
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.
Do I have to have the solenoid valve that controls the air supply to my pneumatic actuator mounted right on 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.
How do I wire up my electric actuator?
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.
I’ve just installed an electric actuated valve and when I power it, it turns the valve 360 degrees and won’t shut off. What’s wrong?
The actuator is wired incorrectly (check the schematic accompanying the actuator), or the external control switch is not the correct type for the actuator.
My electric actuators cycle time is way too fast, can I slow it down?
Not unless you bought it with an optional speed control.
I just replaced a solenoid valve with an electric actuated valve and it won’t work. Why?
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.
