1. Retaining the inherent and typical performance characteristics of the third-generation remote control emergency shut-off valve, which can achieve valve closure due to real-time overpressure and underpressure in the local pipeline;
2. Adopting a new low torque straight channel ball valve structure with low operating torque;
3. The straight through structure is easy to clean and can effectively prevent ice blockage.
The emergency shut-off valve for remote closure of direct passages has a wide range of applications in fields such as oil and gas, chemical, metallurgical, and power. It can ensure the safe operation of fluid pipelines in various application fields.
Maximum set pressure range for valve overpressure and underpressure:
Under voltage cut-off setting value (MPa)
Overpressure cut-off setting value (MPa)
0.1-5Mpa
5-25Mpa
Power supply used for emergency shut-off valve: 12V 24V
Emergency response time: The shutdown time is less than 2 seconds, and the response time for overvoltage and undervoltage shutdown is less than 2 seconds.
The nominal diameter of the valve |
nominal pressureMPa |
Valve model |
50 | 250 | 50SH/QD-250 50SH/JDQQ-250 |
50 | 420 | 50SH/QD-420 50SH/JDQQ-420 |
65 | 250 | 65SH/QD-250 65SH/JDQQ-250 |
80 | 250 | 80SH/QD-250 80SH/JDQQ-250 |
80 | 420 | 80SH/QD-420 80SH/JDQQ-420 |
The data listed in the table above is the maximum set pressure range, and each group of overpressure and underpressure values should have a certain range of difference. In addition to the above pressure settings, they can be set according to user requirements.