ZDLP Type Electronic Electric Single-Seat Control Valve is composed of PSL series and 3810 series electronic actuators combined with a single-seat control valve. Powered by 220V AC 50Hz, it integrates a servo amplifier, position signal generator, position limit switch, and valve position display. It directly accepts output signals from industrial control instruments or computers (4-20mADC or 1-5VDC) to control valve opening, enabling regulation of medium pressure, flow, temperature, etc. Meanwhile, it can output valve position feedback signals (4-20mADC or 1-5VDC). The valve body features a low-flow-resistance straight-through single-seat upper-guided structure, offering advantages of high precision, large flow capacity, and minimal leakage. Its control accuracy and performance are significantly improved compared to the DKZ type.
Nominal diameter DN (mm) (Valve seat diameterdn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | ||||
-10 | -12 | -15 | -20 | |||||||||
Rated Flow Coefficient Kv | Straight line | 1.8 | 2.8 | 4.4 | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 |
Equal percentage | 1.6 | 2.5 | 4 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | |
Rated stroke L(mm) | 10 | 16 | 25 | 40 | ||||||||
Nominal pressure PN(MPa) | 1.6、4.0、6.4 | |||||||||||
Inherent flow characteristic | Straight line, equal percentage | |||||||||||
Inherent turndown ratio R | 50:01:00 | |||||||||||
Allowable leakage | Single seat | Hard seal: Class Ⅳ Soft seal: Class Ⅵ |
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Sleeve | Hard seal: Class Ⅱ Soft seal: Class Ⅵ |
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Operating temperature t(℃) | -20~200、-40~250、-40~450、-60~450 | |||||||||||
Signal range (mA.DC) | 0~10、4~20 | |||||||||||
Power supply voltage | 220V、50Hz | |||||||||||
Acting mode | At fault: fully closed, fully open, self-locking position |