Cast steel electric switch flange butterfly valve

1 d941x--25c dn150Cast steel electric switch flange butterfly valve??summary:

Cast steel electric switch flange butterfly valveWhen there is no power or a circuit malfunction, we can switch to manual operation to continue using it. The operation is actually very simple, and we inevitably encounter power outages in our daily lives. When there is a power outage, automation becomes empty talk. The connection method and structural form are divided into flange type and clamp type, and due to their characteristics of low physical strength, light weight, and simple structure, the automation we are referring to here is electric automation, which is based on electricity.?

II d941x--25c dn150Cast steel electric switch flange butterfly valve??Features:

1. This valve adopts a double eccentric structure, which has a sealing function that becomes tighter as it is closed, and the sealing performance is reliable.
2. The sealing auxiliary material is paired with stainless steel and oil resistant rubber, which has a long service life.
3. The rubber sealing ring can be located on the valve body or on the butterfly plate, and can be suitable for different characteristics of media for users to choose from.
4. The butterfly plate adopts a frame structure, with high strength, large overcurrent area, and low flow resistance.
5. The overall baking paint can effectively prevent rust and can be used in different media as long as the sealing material of the valve seat is replaced.
6. This valve has a bidirectional sealing function and is not controlled by the flow direction of the medium or the spatial position during installation. It can be installed in any direction.
7. This valve structure is flexible, labor-saving, and convenient to operate.

3、 Main technical indicators:

1. Adjust (given) input signal: 4-20mA; input resistance 150 Ω.
2. Reverse signal output: 4-20mA; output load resistance ≤ 750 Ω.
3. Sensitivity: 0.05%.
4. Dead zone value: 0-4%.
5. Positioning error: ≤± 0.5% (related to mechanical mechanism).
6. Damping characteristics: Dead zone value greater than 0.5%, no oscillation.
7. Delay: not greater than 0.2 seconds.
8. Working power supply: AC220V ± 10%.
9. Motor drive current: not exceeding 1.5A for long-term operation.
10. Electrical limit range closed limit: 0-100% open limit 0~
11. Display accuracy: Level 0.5.
12. Working environment temperature: -25~70 ℃.
13. Environmental humidity: ≤ 95% RH.

4、 Installation precautions:

1. Remove the protective covers on both sides of the flange end and rinse and clean with the valve * open.

2. Before installation, the entire machine should be tested according to the specified signal (electric or gas) to prevent vibration from affecting performance during transportation. Only after passing the test can it be installed online (wiring should follow the electric actuator circuit diagram).

Before connecting to the pipeline, it is necessary to flush and remove any remaining impurities in the pipeline (which may damage the valve seat and ball).

During installation, do not use the actuator part of the valve as a lifting point to avoid damaging the actuator and accessories..

5. This type of valve should be installed in the horizontal or vertical direction of the pipeline.

6. The pipeline near the installation point should not have any low hanging or external force bearing phenomenon. Pipeline brackets or supports can be used to eliminate the deviation of the pipeline.

7. After connecting to the pipeline, please cross tighten the flange connection bolts with the specified torque.