Professional English Translation of Fire Protection Low-Pressure Switch Specifications 

Product Identification?

Designation?: Fire Protection Low-Pressure Switch

Model Range?: DN50-DN200

Mechanical Specifications?

Connection Type?: Standard flange connection

Body Material?: Ductile iron (valve body), plastic housing (gauge head)

Electrical Parameters?

Power Supply?: 24V DC

Functional Characteristics?

Compliance?: Meets 2014 Fire Protection Code requirements for installation on fire pipelines

Control Logic?: Automates pump start/stop through:

Pressure sensor signal feedback

Relay signal conversion for fire pump activation

Media Compatibility?: Suitable for oil, gas, and water measurement

Performance Metrics?

Accuracy?: High precision (specific values per applicable standards)

Response?: Rapid actuation meeting code automation requirements

Adjustability?:

Configurable flow rate thresholds

NO/NC (Normally Open/Normally Closed) contact configurability

Installation Notes?

Operation?: Simplified user interface

Mounting?: Designed for field serviceability