Self-operated Pressure Control Valve
Introduction:
The self-operated differential pressure control valve is a valve used to adjust the direction of water supply in a water supply system in which fire-fighting water and domestic water are connected in parallel.
When a fire breaks out, a large amount of water is urgently needed for firefighting, and domestic water is cut off immediately to ensure sufficient firefighting water; when the pressure of water for firefighting stops decreases, the valve automatically opens and assumes a normally open state to restore domestic water supply. The valve makes the system unnecessary to set up a special separate water supply pipe network for fire protection, which greatly saves the construction cost and water consumption. The valve control has high sensitivity, safety and reliability, easy debugging and long service life.
Applicable Working Conditions:
It does not require external energy, and relies on the pressure change of the regulated medium to automatically adjust, automatically eliminates the remaining pressure head of the pipe network and the flow change caused by pressure fluctuations, and keeps the user’s inlet and outlet pressure differences, which helps to stabilize the system operation. It is especially suitable for Household metering or automation system.
Features:
1. Improve the room temperature qualified rate of heating and air conditioning.
2. Installed in the water system, after one adjustment before operation, the system flow can be automatically kept constant at the required set value.
3. It can effectively overcome the bad operation mode of “large flow rate and small temperature difference”, improve the energy efficiency of the system, and realize economical operation.
4. It is suitable for water systems that require flow control, especially for flow control of non-corrosive liquid media such as heating and air conditioning.
5. It can automatically eliminate the hydraulic imbalance caused by various factors in the water system, maintain the flow required by the user, and overcome the “unevenness of cold and heat”.
Main Parameters:
| Nominal Diameter(DN) |
L(mm) |
Flow Rate (m³/h) |
| 15 |
100 |
0.1-1.5 |
| 20 |
110 |
0.1-1.5 |
| 25 |
125 |
0.2-2 |
| 32 |
180 |
0.5-4 |
| 40 |
190 |
1-6 |
| 50 |
210 |
2-10 |
| 65 |
255 |
3-15 |
| 30 |
290 |
5-25 |
| 100 |
330 |
10-25 |
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