Product Model: YXKD743H

Nominal Diameter: DN150~DN1800

Nominal Pressure: PN2.5~4.0 MPa

Applicable Media: Water, steam, gas, oil products, etc.

Medium Temperature: ≤80°C

Opening Time: 10–90 seconds (adjustable)

Normal Closing Time: 10–90 seconds (adjustable)

Quick Closing Time: 0.3–0.8 seconds

Minimum Flow Resistance Coefficient (Fully Open): 0.1

Power Supply: AC380V 

Optional Control Power Supply: AC220V、DC220V、DC110V、DC24V 

Controllable Actions: Open valve, Close valve, Stop, 15-degree jogging (inching), Quick close.

Product Overview
The hydraulically operated quick-closing (opening) valve is mainly installed in high-safety-level systems such as steam turbine extraction pipelines and the inlet pipelines of Blast Furnace Top Gas Recovery Turbine Units (TRT). In the event of a crisis in the system, it can perform an emergency closing within 0.3 to 0.8 seconds. It can also regulate pipeline flow, achieving reliable shut-off of the pipeline and protecting system safety.

The sealing surface of our factory's hydraulically operated quick-closing (opening) valve adopts a triple-offset structure, ensuring easy opening and closing and reliable sealing. The transmission structure is compact, and a buffer device is provided at the tail of the hydraulic cylinder to eliminate the impact on the cylinder during quick closing. The main control valves of the hydraulic station all adopt threaded cartridge valves from internationally renowned brands such as German Rexroth, occupying minimal space. During normal opening and closing operations, the pressure oil source is provided by the oil pump or the hydraulic station supporting the steam turbine or TRT main unit. During rapid closing, it is achieved through the rapid release of the accumulator. In addition to actions such as slow opening, slow closing, quick closing (opening), regulation, and stop, the valve can also perform a 15% stroke jogging test at the fully open position to ensure that the system will not jam during emergency valve closure.

The electrical control of this valve adopts a PLC intelligent control system, featuring simple operation, reliable performance, and a high degree of intelligence, which can fully meet the user's needs for automated control.

Product Features

1. This valve is mainly composed of the valve body, hydraulic station, quick-closing actuator, PLC intelligent electrical control box, and a specially made stroke feedback device, etc.

2. Precision-machined rack and pinion type hydraulic actuator, with a compact structure, smooth operation, and high safety and reliability.

3. PLC intelligent electrical control system with a high degree of automation, capable of remote and local control.

4. Utilizes renowned automation components, ensuring superior product performance and reliable quality.

5. The power source for normal valve opening and closing is generally provided by the supporting hydraulic pump station or can come from an on-site hydraulic source.

6. The system power supply is 380V, and the control power supplies are AC220V, DC110V, and other voltage levels.

7. The valve adopts a triple-offset multi-layer metal hard-sealed butterfly valve, which is high-temperature resistant, easy to open and close, and reliably sealed.