QT-D-CEW Motorized Cast Iron EPDM Butterfly Valve
QT-D-CEW Motorized Cast Iron EPDM Butterfly Valve
The Motorized Cast Iron EPDM Butterfly Valve combines a cast iron body, EPDM seat, and electric actuator for precise flow control, ensuring leak-free operation, corrosion resistance, and long service life, verified by PN16 pressure tests and CE, RoHS, ISO 9001 certifications.
| Size Range | DN50–DN600 (2″–24″) |
| Working Pressure Range: | PN10 / PN16 (150 PSI) |
| Working Temperature Range: | −10 °C to +120 °C |
| Body Material: | Cast Iron |
| Connection Type: | Wafer or Lug Type |
| Applicable Medium: | Water, Air, Neutral Liquids, Light Chemicals |
| Actuator Type: | Electric Quarter-Turn Actuator |
| Voltage Options | AC220V / AC110V / AC24V / DC24V |
| Design Standard | ISO 5211, EN 593 |
| Testing Standard | API 598, EN 12266-1 |
| Fire-Safe Design | Optional, API 607 |
| Certification | CE / ROHS / ISO / SIL / TUV /IP68 Waterproof |
| Customization | Above Are Standard Parameter Samples. If You Have Specific Parameters And Materials, We Can Customize Them All. |
| Actuator Model | Standard Time/Torque | Optional Time/Torque | Rotation Angle Range | Actuator Weight | Power Supply | Optional Control Circuit |
|---|---|---|---|---|---|---|
| FLE-105 | 25S/50Nm | 4S/20Nm 10S/30Nm | 0-90° Adjustable | 2.2kg | DC24V AC24V AC110V AC220V AC380V | A type B type C type D type E type F type |
| FLE-110 | 25S/100Nm | 15S/50Nm | 5.1kg | |||
| FLE-116 | 25S/160Nm | 15S/80Nm | 5.1kg | |||
| FLE-120 | 25S/200Nm | 15S/100Nm | 7.5kg | |||
| FLE-140 | 25S/400Nm | 15S/200Nm | 7.5kg | |||
| FLE-160 | 25S/600Nm | 15S/300Nm | 8.1kg | |||
| FLE-1100 | 50S/1000Nm | 25S/500Nm | 12.7kg | |||
| FLE-1200 | 50S/2000Nm | 25S/1000Nm | 12.7kg | |||
| Type | ON/OFF, Regulating, Intelligent | |||||
| Insulation Resistance | 100MΩ/500VDC | |||||
| Dielectric Strength | 1500V AC 1min. | |||||
| Level of Protection | IP67 (IP68 optional) | |||||
| Installed Location | 360° Installation at any Angle | |||||
| Electrical Interface | 2-G1/2 Metal Fitting, the corresponding metal cable joints should be installed according to the selected cables | |||||
| Ambient temperature | -20°C to +60°C | |||||
| Optional Explosion Proof | Ex d II BT4 / CT4 / CT6 Gb | |||||
| Power-loss reset (fail-safe) function | Fail-open, Fail-closed or No-reset (factory-selectable) | |||||
| Optional functions | Overtorque protection, dehumidification heater, passive contact switch, operating handwheel | |||||
Certified Quality for Industrial Valve Applications
Fleyenda valves and electric actuators are built for stable performance, reliable operation, and long-term industrial use. With certified quality support, they are suitable for water treatment, chemical processing, automation, and industrial process control systems.
FAQs That 80% Users Interest
1.What steps help prevent actuator or seal failure in the motorized cast iron EPDM butterfly valve?
• Match actuator torque to valve requirements to avoid motor overload or wear.
• Ensure the EPDM liner is compatible with fluid type and temperature range.
• Align the ISO 5211 mounting pad and stem coupling correctly to prevent disc misalignment.
• Inspect actuator housing regularly to prevent moisture or dust ingress.
2.How does the cast-iron body and EPDM seat affect performance of the electric actuated butterfly valve?
• The cast iron housing provides strength and durability for HVAC and water systems.
• The EPDM seat is suitable for water, mild chemicals, and air but not strong acids or solvents.
• The combination supports moderate pressure and temperature with reliable sealing.
• Alternative materials are recommended for seawater, abrasive, or high-temperature media.
3.What installation issues should be avoided for the wafer-type motorized butterfly valve?
• Install in the correct flow direction to prevent seat or disc damage.
• Leave space for actuator wiring and manual override access.
• Avoid oversizing; correctly sized valves improve control and extend actuator life.
• Check flange flatness and gasket condition to prevent leakage at the wafer interface.
4.How does the electric actuator improve efficiency of the automated cast iron EPDM butterfly valve?
• Enables remote or modulating control to reduce manual operation.
• Multi-voltage design allows easy integration into automation systems.
• Calibrate limit switches and position feedback for accurate valve operation.
• Keep the manual override accessible for safe use during power failure.