1. Description of Fire Dry Sprinkler K-ZSTGX20-57/6879/93/141℃

The dry sprinkler head is designed with stainless steel internal components, primarily used in dry or pre-action systems, as well as in situations where the sprinkler head or part of the connecting pipe needs to be in a freezing environment, or where seasonal shutdown requires draining the sprinkler system pipeline network to prevent freezing. This sprinkler head can also be used in wet sprinkler systems in areas prone to freezing.

Product Standard: GB5135.1 "Automatic Sprinkler Systems — Part 1: Sprinkler Heads"

Design Code: GB50084 "Code for Design of Automatic Sprinkler Systems"

Acceptance Code: GB50261 "Code for Installation and Acceptance of Automatic Sprinkler Systems"

2. Features of Fire Dry Sprinkler K-ZSTGX20-57/6879/93/141℃

The dry sprinkler head consists of a frame assembly, glass bulb, sealing components, inner and outer decorative plates, external connecting pipe, and sealing seat ring. Under normal conditions, the dry sprinkler head in the system remains in a closed state, with the seal at the water inlet preventing water from entering the dry sprinkler head's distribution pipe. When a fire occurs, the temperature-sensitive glass bulb element heats up and reaches the activation temperature, causing the glass bulb to break and the base to detach. Simultaneously, the internal mechanism of the dry sprinkler head's pipe is released, allowing water to flow out and activating the sprinkler head to spray water for fire suppression.

3. Technical Performance of Fire Dry Sprinkler K-ZSTGX20-57/6879/93/141℃

(1) Nominal Diameter: φ15mm; Connection Thread: R2 1″

(2) Flow Coefficient: K=80

(3) Rated Working Pressure: 1.2MPa

(4) Installation Type: Pendant

(5) Sensitivity: Φ3mm (Quick Response), Φ5mm (Special Response)