RASCO reliable 93-degree fast response sprinkler DN15 pendant FM approved

Reliable 93°C Quick Response Sprinkler Head FM Approved 93°C Fast Response Pendant K80-93°C Quick Response Sprinkler Head

FM approved quick response sprinkler head, Reliable fire sprinkler head from the USA, 93°C quick response sprinkler head DN15, FM approved 93°C glass bulb sprinkler head, FM approved 93°C fire sprinkler head

1. Description

The 93°C quick response glass bulb sprinkler head is a critical component in automatic fire sprinkler systems, serving as a device to detect fires and control or extinguish them through automatic water discharge. It is suitable for use in environments with temperatures not lower than 4°C and not higher than 70°C, in light to moderate hazard buildings such as hotels, shopping malls, restaurants, entertainment venues, warehouses, hospitals, factories, airports, and basements, where wet pipe systems are employed for fire suppression.

Product standard reference: GB5135.1—2003 "Automatic Fire Sprinkler Systems—Part 1: Sprinkler Heads"

2. Working Principle

The working principle of the FM approved quick response glass bulb sprinkler head relies on a glass bulb filled with an organic solution that has a high thermal expansion coefficient, acting as the thermal sensing element. At normal temperatures, the glass bulb shell can withstand a certain supporting force, ensuring the nozzle remains sealed. When a fire occurs and the temperature rises, the organic solution inside the glass bulb expands thermally, generating significant internal pressure until the glass bulb shell fractures, thereby activating the sprinkler head to discharge water.

3. Structural Features

This series of glass bulb sprinkler heads is assembled from a copper alloy frame, glass bulb, sealing components, glass bulb seat, set screw, and deflector. They feature a compact structure and an elegant, aesthetically pleasing appearance.

3.1. The sprinkler frame is precision-forged from high-strength copper alloy, offering excellent strength and corrosion resistance.

3.2. The thermal sensing element (glass bulb) utilizes high-quality domestic and international products, ensuring high strength, reliable operation, and fast response.

3.3. This series of glass bulb sprinkler heads has been tested by the National Center for Quality Supervision and Testing of Fixed Fire Fighting Systems and Fire Resistant Components, complying with all provisions of the national standard GB5135.1-2003 "Automatic Fire Sprinkler Systems—Part 1: Sprinkler Heads".

4. Technical Characteristics and Model Specifications:

4.1. Nominal diameter: φ15mm, Connection thread: R1/2", Flow coefficient: K=80±4.

4.2. Nominal diameter: φ20mm, Connection thread: R3/4", Flow coefficient: K=115±9.

4.3. Rated working pressure: 1.2MPa, Factory test pressure: 3.0MPa.

4.4. Glass bulb diameter: φ3mm.