Working principle of digital control valve for loading, product features, assembly diagram

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Working principle of the loading digital control valve: The loading digital control valve is operated by two solenoid valves, with digital signals used to control these solenoid valves; this enables the flow rate of the medium to be maintained within the values set by the system, and it automatically returns to a closed state when power is cut off. At the same time, it features a design without diaphragms or sealing boxes as well as a 45-degree valve body, offering active shut-off and linear control capabilities. The product boasts excellent properties such as low flow resistance, good flow capacity, reliable adjustment performance, and stable flow control, enabling effective prevention of water hammer phenomena. With a rational design, advanced manufacturing processes, and reliable performance, it is automatically controlled by a batch controller, allowing for low-flow startup, high-flow rate control, low-flow shutdown, and ultimate shut-off during loading. The pressure on the piston spring side is adjusted using an electromagnetic control valve, thereby enabling the valve to operate at any desired opening degree. When the flow rate exceeds the system’s set value, the electromagnetic control valve receives digital signals to determine the valve’s opening degree; this opening degree is determined based on the system’s set flow rate, ensuring that the entire loading process operates at a safe design flow rate. The valve features functions such as an automatic one-way valve that prevents backflow, as well as automatic reset and closure in the event of a power loss. It also helps to prevent water hammer effects, thus protecting pipelines, equipment, and personal property. Features of the digital control valve for loading:
1. Pilot-operated design, requiring no external power source.
2. Precise flow rate and volume control with minimal overshoot.
3. DC-type valve body design resulting in a low flow resistance coefficient.
4. Design with protection against water impact, and adjustable switching speed.
5. Built-in filtration system to prevent channel blockage.
6. The main valve features a piston structure without diaphragms.
7. Can be controlled automatically or manually, without the need for a bypass circuit.
8. Flexible operation, simple structure, and easy maintenance.

Technical specifications of the digital control valve for loading:
Valve body: Carbon steel, stainless steel
Piston sleeve: Stainless steel
Sealing material: PTFE
Nominal diameter: DN50, DN80, DN100, DN150
Nominal pressure: PN16 to PN25, ANSI Class 150 to 300
Connection standards: HG/T20592, ANSI
Suitable media: Refined oil, liquid chemicals, natural gas, liquefied gas, water, etc.
Operating temperature: -20 to +80°C
Flow range: 6–5000 L/min
Flow characteristic: Multi-stage control
Leakage level: Class VI
Power supply: AC220V or DC24V (optional)
Explosion protection rating: ExdIIBT4
Protection rating: IP65

Structural diagram of the digital control valve for loading