A closed sprinkler is a component that directly sprays water to extinguish fires. It is an automatic sprinkler with a heat-sensitive component and its sealing component. The heat-sensitive element can operate within a predetermined temperature range, causing the heat-sensitive element and its sealing component to separate from the main body of the sprinkler head, and spray water to extinguish the fire within the prescribed protection area according to the prescribed shape and water volume.

Closed water mist nozzle product features:

● Produced in strict accordance with water mist related standards;

● The working pressure of high-pressure water mist nozzles is ≧3.5Mpa, and the working pressure of medium-pressure water mist nozzles is 1.2Mpa~3.5Mpa;

● Shell material: stainless steel 304, 316, copper, etc.;

● 100% flow, fog, and seal production testing to confirm product quality;

● The closed nozzle adopts glass balls imported from Germany JOB Company;

● Design parameters and structural appearance can be customized to meet the application needs of various scenarios.

Types of closed water mist nozzles:

Divided by heat-sensitive components: glass ball nozzles and fusible component nozzles;

According to the installation form and water distribution shape: upright type, pendent type, side wall type, ceiling type and dry pendant type.

Closed water mist nozzle droplet diameter:

Under the minimum working pressure, the droplet diameter that the closed water mist nozzle can form on a plane 1m downward from the axis is: Dv0.5 is less than 200μm, Dv0.99 is less than 400μm

In other words, on this plane, 99% of the droplets have a diameter of less than 400 μm, and 50% of the droplets have a diameter of less than 200 μm.

Closed water mist nozzle color temperature:

There are 7 common ones, namely: orange 57℃, red 68℃, yellow 79℃, green 93℃, blue 141℃, purple 182℃, black 227℃

Closed water mist nozzle specifications:

Commonly used closed water mist nozzles include high pressure and medium pressure. The working pressure of high-pressure water mist closed nozzles is above 3.5Mpa, and the working pressure of medium-pressure water mist closed nozzles is between 1.2Mpa and 3.5Mpa. The following is the specific model parameter table:

High pressure water mist closed nozzle selection table:

Medium pressure fine water mist closed nozzle selection table:

Closed water mist nozzle price:

Unit price: 200 yuan/piece

Lanzhong Electromechanical has the ability to design and produce various forms of nozzles, and can customize the structural type, flow coefficient and material according to customer needs. We will quote based on the design and production difficulty of the nozzle as well as the order quantity, and provide wholesale supply. Large quantity and good price. Welcome to buy!

Customized closed water mist nozzle:

In addition to conventional models and parameters, our company has the ability to design and produce other forms of closed water mist nozzles. Customers can provide structural types, flow coefficients and materials for customization. Customization of closed water mist nozzles requires at least the following information:

● Nozzle structure type, such as appearance size, thread, structure, etc.;

●Media;

● Flow coefficient;

● Performance requirements, such as droplet diameter, range, spray angle, installation parameters, etc.;

● Minimum and maximum work pressure;

● Application place and working environment;

● Material;

● Glass sphere parameters.

The difference between closed sprinklers and open sprinklers:

Closed nozzle: It is a normally closed nozzle. The temperature sensing and locking device of the nozzle will only fall off and open the nozzle under a predetermined temperature environment. Therefore, when a fire occurs, only the nozzles that are in the flame or near the fire source will be turned on to extinguish the fire.

Open nozzle: without temperature sensing or locking device, it is normally open. When a fire occurs, all open sprinklers in the system protection area where the fire is located will emit water to extinguish the fire.