The nominal bore of electric flow control valves ranges from 20 to 200 mm, with nominal pressures of 1.0, 1.6, 4.0, and 6.4 MPa. The operating temperature range spans -40°C to 450°C, accepting signals of 0–10 mA DC or 4–20 mA DC. Among these, electric single-seat control valves are suitable for applications with low differential pressure, high medium viscosity, or slightly particulate impurities. Electric jacketed control valves are suitable for applications with higher differential pressures. Based on the sealing material of internal valve components, they are further classified into metal-to-metal and non-metal-to-metal seals. The latter achieves Class VI (zero leakage) standards during valve closure. Based on packing type, they are categorized into standard packing seals and bellows seals. The former is used in general applications, while the latter is employed in critical applications where external leakage is unacceptable. Flow characteristics are linear or equal percentage. Electric flow control valves, when paired with different actuators, can be classified into standard and electronic types. A wide variety of models and sizes are available for selection.
| Nominal Diameter(DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seat diameter(dn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Rated Flow Coefficient(KV) | Straight line | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
| Equal parts | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 360 | 570 | 850 | 1180 | |
| Permissible pressure differential(MPa) | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0,7 | 0.6 | 0.5 | 0.3 | 0.2 | 0.1 | |
| Nominal Pressure(MPa) | 1.6, 2.5, 4.0, 6.4, 10.0 | |||||||||||||
| Rated stroke(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Valve bonnet type | Standard Type (-17 to +250°C), High-Temperature Type (+250 to +450°C), Low-Temperature Type (-40 to -196°C), Bellows-Sealed Type (-40 to +350°C) | |||||||||||||
| Cap Form | Bolt-clamping type | |||||||||||||
| Sealing Packing | V-shaped PTFE packing, V-shaped flexible graphite packing | |||||||||||||
| Valve Core Type | Single-seat plunger-type valve core | |||||||||||||
| Flow Characteristics | Linearity, equal percentage | |||||||||||||
| Flow Characteristics | 381L Series Electric Actuators, PSL Series Electric Actuators | |||||||||||||
| Flow Characteristics | Power supply voltage: 220V/50Hz Input signal: 4-20mA or 1-5V DC Output signal: 4-20mA DC | |||||||||||||
| Protection Rating: Equivalent to IP55 Explosion-proof Marking: ExdⅡBT4 (ExdⅡBT6 available upon special request) Manual Operation: Handle | ||||||||||||||
| Ambient temperature: -25 to +70°C Ambient humidity: ≤95% | ||||||||||||||
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