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Product introduction:
The bio-closed valve/airtight valve, also known as low-leakage valve, can separate the ventilation system into several partitions and are used in nuclear power, petrochemical, food processing, laboratories, etc. With good airtightness, it can meet the safety requirement of zero leakage in special occasions (zero leakage at specified differ - ential pressure) .
The closed valve/airtight valve is typically used in B1B0 systems to isolate filters and contaminated components.
The closed valve/airtight valve is divided into manual and electric types according to the different actuators, in which the electric closed valve can be matched with automatic control system to automatically control and adjust the air volume, and ensure its airtightness even in the case of power failure.
The material of the valve body and the dimensions of the valve can be customized according to the actual needs of customers.
The product meets ASMEN509 or EU EN12266-2 standards with differential pressure up to 10"" water column (2500Pa) and zero leakage. It can also meet the safety requirement of zero leakage (zero leakage at specified differ- ential pressure) for special occasions.
Main technical parameters：
| Item | Parameter | A(mm) | (CMH) | |
| Max pressure | 5.0KPa | 200 | 1695 | |
| Max air speed | 25m/s | 250 | 2649 | |
| Min temperature | -30°C | 300 | 3815 | |
| Max temperature | 80C | 350 | 5192 | |
| Leakage rate | zero@2.5 KPa | 400 | 6782 | |
| Min dimensions | 152mm | 450 | 8583 | |
| Max dimensions | 915mm | 610 | 15773 | |
| Body material | SUS 304 | |||
| Shaft material | SUS 304 | |||
| Bearing material | SUS 304 | |||
| Blade material | SUS 304 | |||
| Blade seal | Silicone rubber/compressed neoprene | |||
