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Electric single seat (set) regulating valve
The electric actuator has a servo amplifier inside, which does not require a separate servo amplifier. It can be controlled by an input control signal
Product details
The electric actuator has a servo amplifier inside, which does not require a separate servo amplifier. It can be controlled by an input control signal (4-20mADC or 1-5VDC) and a single-phase power supply to adjust parameters such as pressure, flow rate, temperature, and liquid level. This valve has the characteristics of small volume, light weight, simple connection, high flow rate, and high adjustment accuracy. It is widely used in industrial process automatic control systems in industries such as power, petroleum, chemical, metallurgy, environmental protection, light industry, teaching and research equipment.
valve body
Form: Straight through inverted S casting valve
Nominal diameter: DN20-200mm
Nominal pressure: PN1.6 4.0 6.4MPa
Connection form: JB78-59 JB/T79.2-94 Concave
Material: HT200 ZG230-450 ZG1Gr18Ni9Ti
ZG0Cr18Ni12M02Ti
Bonnet
Room temperature type: -20 ℃ -+200 ℃
Heat dissipation type: -40 ℃ -+450 ℃
Cover form: bolt compression type
Packing: V-shaped polytetrafluoroethylene, flexible graphite, stainless steel corrugated pipe
Valve components
Valve core form: upward guided single seat plunger valve core,
Or upward guided single seat sleeve plunger valve core
Traffic characteristics: equal percentage characteristics,
Linear characteristics and quick opening characteristics
Material: 1Cr18Ni9Ti OCr18Ni12Mo2Ti
External dimensions
| Nominal communication Diameter DN (mm) |
L(mm) | H(mm) | H1(mm) | D (mm) |
||||||
| 0.6,1.6 (MPa) |
4.0 (MPa) |
6.4 (MPa) |
normal temperature type |
heat dissipation type |
PN0.6 (MPa) |
PN1.6 (MPa) |
PN4.0 (MPa) |
PN6.4 (MPa) |
||
| 20 | 181 | 194 | 206 | 699 | 849 | 45 | 52.5 | 52.5 | 65 | 225 |
| 25 | 184 | 197 | 210 | 711 | 861 | 50 | 57.5 | 57.5 | 70 | 225 |
| 40 | 222 | 235 | 251 | 728 | 893 | 65 | 75 | 75 | 85 | 225 |
| 50 | 254 | 267 | 286 | 731 | 901 | 70 | 82.5 | 82.5 | 90 | 255 |
| 65 | 276 | 292 | 311 | 827 | 100.7 | 80 | 92.5 | 92.5 | 102.5 | 255 |
| 80 | 298 | 317 | 337 | 839 | 1024 | 95 | 100 | 100 | 107.5 | 255 |
| 100 | 352 | 368 | 394 | 857 | 1067 | 105 | 110 | 117.5 | 125 | 310 |
| 150 | 451 | 473 | 508 | 1140 | 1400 | 132.5 | 142.5 | 150 | 172.5 | 310 |
| 200 | 600 | 610 | 650 | 1160 | 1420 | 160 | 170 | 187.5 | 207.5 | 310 |
ZDLP/M specification parameter table
| Nominal diameter DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||||||
| Valve seat diameter mm | 10 | 12 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |||
| Rated flow coefficient Kv | straight line | 1.8 | 2.8 | 4.4 | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 | ||
| Equal percentage | 1.6 | 2.5 | 4 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | |||
| Travel distance mm | 10 | 16 | 25 | 40 | 60 | ||||||||||||
| Allowable pressure difference △ MPa | Single seat type | 6.4 | 4.5 | 3.2 | 2.5 | 3.2 | 2.15 | 1.4 | 1.37 | 0.94 | 0.6 | 0.52 | 0.35 | 0.2 | |||
| Sleeve type | 6.4 | 3.7 | 3.7 | 2.4 | 2.9 | 1.5 | 0.8 | 3.1 | 3.1 | 3.1 | |||||||
| Allowable leakage quantity Q | Single seat type | 0.01% of Kv value, according to GB4213-84 standard | |||||||||||||||
| Sleeve type | 0.05% of Kv value, according to GB4213-84 standard | ||||||||||||||||
| Equipped with electric actuator model | QSL | 201 | 202 | 204 | 208 | 312 | |||||||||||
| 3810L | 381LSA－08 | LSA－20 | 381LSB－30 | 381LSB－50 | 381LSC－65 | ||||||||||||
| Basic error% | ±2.5 | ||||||||||||||||
| Return difference% | 2.0 | ||||||||||||||||
| Dead zone% | 1.0 | ||||||||||||||||
| Constant point deviation% | ±2.5 | ||||||||||||||||
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