
DELCO VALVE
DELCO Provide Various Optimal Solution For Industrial Valves, Especially For Automatic Control Valves & Manual Industrial Valves etc.
Get a Quick QuoteDELCO DK55-1PF Electric 1 Pieces Flange Ball Valve, Monolithic Leak-Proof for Oil Gas Chemical HVAC Industrial Pipeline
Actuator: DK55-3PF
The Electric 1 Pieces Flange Ball Valve is a compact automated ball valve designed for industrial pipeline applications requiring reliable shut-off and remote electric operation. It combines a one-piece valve body, flanged pipe connection and electric actuator into a practical solution for automated fluid control.
The valve uses a rotating ball with a flow passage to control the movement of pipeline media. When the electric actuator receives an operating signal, it drives the valve stem and rotates the ball approximately 90° between the fully open and fully closed positions.
Key Features
✅️Compact One-Piece Construction
The one-piece body provides a compact valve structure with fewer body joints, making it suitable for installations where space and structural simplicity are important.
✅️Reliable Electric Automation
The electric actuator enables remote opening and closing of the valve and can be integrated into automated control systems. Depending on the actuator configuration, On/Off or modulating control can be provided.
✅️Robust Flanged Connection
The flanged-end design provides a secure connection for industrial pipelines and allows convenient installation, inspection and maintenance.
✅️Efficient Quarter-Turn Operation
The ball rotates approximately 90° between open and closed positions, enabling relatively fast automated operation compared with multi-turn valve designs.
✅️Flexible Material Selection
Valve body, ball, stem and seat materials can be selected according to the operating medium, temperature, pressure and corrosion conditions.
✅️Multiple Actuator Configurations
Different electric actuators can be matched according to required torque, operating time, control mode, power supply, protection rating and environmental conditions.
✅️Suitable for Automated Process Systems
The electric actuator can be integrated with PLC, DCS, SCADA or other industrial control systems when the selected actuator and control package support the required interface.
Primary Applications
- Water Treatment: Used for automated isolation and flow control in water supply, wastewater treatment, filtration and pumping systems.
- HVAC Systems: Suitable for chilled water, hot water and other HVAC process pipelines where automated quarter-turn flow control is required.
- Chemical Processing: Available with corrosion-resistant body and sealing materials for compatible chemical media and process conditions.
- Oil & Gas: Suitable for automated isolation and fluid handling in oil, gas and related industrial pipeline systems, with appropriate material and certification options.
- Power Generation: Used in auxiliary water, cooling, fuel and other industrial process systems where electric valve automation is required.
- Industrial Manufacturing: Applicable to automated production lines, utility systems, compressed-air systems and general industrial fluid handling.
- Process Automation: The electric actuator allows centralized or remote valve operation, making the valve suitable for automated pipeline management and process control.
Selection of Electric Actuators

| Actuator Type | Quarter-Turn Electric Actuator | Quarter-Turn Electric Actuator | Explosion-Proof Electric Actuator | Explosion-Proof Electric Actuator | Explosion-Proof Electric Actuator | Explosion-Proof Electric Actuator | Mini Electric Actuator | Mini Timer Electric Actuator | Multi-Turn Electric Actuator | Quarter-Turn Electric Actuator | Multi & Quarter-Turn Electric Actuator | IP68 Waterproof Electric Actuator |
| Product Model | DK Series | DKV Series | CT4 | BT4 | BT6 | CT6 | DK-A | Mini Timer | Z Type | Q Type | Multi & Quarter Turn | DKQS-IP68 |
| Voltage | AC/DC 24V, AC 110/220V, AC 380V | AC/DC 24V, AC 110/220V, AC 380V | AC 110/220V, AC 380V | AC 110/220V, AC 380V | AC 110/220V, AC 380V | AC 110/220V, AC 380V | DC 12/24V, AC 24/110/220V | DC/AC 24V, AC 110/220V | AC 380V, optional 220/415/440/660V, DC options | AC/DC 24V, AC 110/220V, AC 380V | AC 110/220V, AC 380V | AC 220/380V, optional configurations |
| Actuator Rotation | 0–90° | 0–90° / Scalable | 0–90° / Customizable | 0–90° / Customizable | 0–90° / Customizable | 0–90° / Customizable | 0–90° | 0–90° | Multi-Turn | 0–90° | Multi-Turn / 0–90° | 0–90° / Multi-Turn depending on configuration |
| Input/Output Signals | On/Off, 4–20mA / 0–10V | On/Off, 4–20mA / 0–10V | On/Off, Regulation, Intelligent | On/Off, Regulation, Intelligent | On/Off, Regulation, Intelligent | On/Off, Regulation, Intelligent | On/Off, Optional feedback | Timer / On-Off | On/Off, 4–20mA, Intelligent / Fieldbus | On/Off, Regulation, Intelligent | On/Off, Regulation, Intelligent | On/Off, Regulation, Intelligent |
| Open/Close time | about 10–60 s | about 10–60 s | about 10–60 s | about 10–60 s | about 10–60 s | about 10–60 s | about 5–30 s | ≤7 s (Series of fast models) | about 10 min duty cycle | about 10–60 s | Based on actuator and valve configuration | Based on specifications and configuration |
| Torque Range | 50–400 N·m | 50–4000 N·m | 50–3000 N·m | 50–3000 N·m | 50–3000 N·m | 50–3000 N·m | 5–100 N·m | Low torque range | 50–1200 N·m | 50–4000 N·m | 50–3000 N·m | 50–3000 N·m |
| Temperature Range | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C, optional wider range | -20°C to +60°C | -20°C to +60°C | -20°C to +60°C |
| Protection Level | IP65 | IP67 | IP67 | IP67 | IP67 | IP67 | IP65 | IP65 | IP65 / IP68 | IP65 / IP68 | IP67 | IP68 |
| Features | Compact quarter-turn actuator suitable for ball valves, butterfly valves, etc.; supports both on/off and modulating control. | High-torque, wide-angle configuration; suitable for industrial ball valves, butterfly valves, and other rotary valves. | CT4 explosion-proof design, suitable for industrial hazardous areas where combustible gases are present. | BT4 explosion-proof configuration, offering explosion-proof, dust-proof, and waterproof protection. | BT6 explosion-proof rating configuration, suitable for hazardous industrial environments with higher safety requirements. | CT6 explosion-proof configuration, suitable for chemical, oil and gas, gas, and other hazardous areas. | Compact and lightweight; suitable for small-bore ball valves, butterfly valves, and space-constrained applications. | Compact size, timing control, and rapid switching; suitable for small automated valves. | Multi-turn actuator, suitable for valves requiring multi-turn operation, such as gate valves, globe valves, and diaphragm valves. | Compact rotary actuator supporting manual operation, intelligent control, and various protection configurations. | Compatible with both multi-turn and part-turn applications, suitable for various types of industrial valves. | Features high-level water and dust resistance; suitable for outdoor use and in environments that are damp, prone to water accumulation, or subject to partial submersion. |
|
Technical Parameter |
Specification |
|---|---|
| Valve Body | One-Piece Body |
| Valve Operation | Electric Actuator, Quarter-Turn |
| End Connection | Flanged |
| Body Material | WCB / CF8 / CF8M / SS304 / SS316 |
| Ball Material | SS304 / SS316 / Customized |
| Stem Material | SS304 / SS316 / Customized |
| Seat Material | PTFE / RPTFE / PEEK / Metal |
| Packing | PTFE / Graphite / Application-Specific |
| Temperature Range | Approx. -29°C to +180°C |
| Protection Rating | IP65 / IP67 / IP68 |
| Applicable Media | Water, Air, Gas, Oil, Steam, Chemicals and Industrial Fluids |
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Industry-Specific Expertise
We deliver tailored valve solutions for diverse sectors, meeting their unique operational and regulatory needs. -
Engineered for Performance
Our valves are built for durability, precision, and efficiency, optimizing your system's performance and longevity. -
Guaranteed Compliance & Safety
We ensure high standards and certifications, providing reliable and safe solutions that protect your assets and personnel. -
Expert Support & Customization
Benefit from our technical expertise and customization options, ensuring perfect valve integration and optimal functionality for your specific application.

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