Product Advantages
● Suitable for vertical upward-flow pipelines
● Compact and space-saving construction
● Fast, spring-assisted closing response
● Can be installed horizontally when permitted by the selected configuration
● No external actuator or manual operation required
● Suitable for pump outlet and circulation systems
● Reliable operation under stable differential-pressure conditions
Technical Specifications
Size Range
● NPS 1/2\”–2\” (DN15–DN50)
Pressure Rating
● PN10 / PN16
The required cracking pressure and spring force should be selected according to system pressure, flow rate, pump characteristics, and installation orientation.
Standards
● Design and General Requirements: EN 16767
● Inspection and Testing: EN 12266-1
● Thread Connection: ISO 228-1
● Optional Thread Standards: ISO 7-1 or ASME B1.20.1 NPT upon request
Other sizes, pressure ratings, spring materials, sealing materials, and cracking pressures can be discussed with the factory.
Industry Applications
● Building water supply
● Vertical risers
● Pump discharge pipelines
● HVAC circulation systems
● Agricultural irrigation
● Water treatment auxiliary systems
● Compressed air systems with compatible sealing materials
For vertical installation, the medium should normally flow upward. Suitability for downward flow or other installation orientations must be confirmed according to the specific internal construction.
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