What is ESFR sprinkler?
ESFR (Early Suppression, Fast Response) ceiling mounted sprinklers can be used in warehouses in place of in-rack fire sprinkler systems. ESFR provides protection that exceeds that of in-rack systems. ESFR high output, high volume systems are located in ceiling spaces as with conventional fire sprinkler systems.
Where is the model number on a sprinkler head?
Let’s get to it: a sprinkler identification number consists of one or two letters followed by three or four numbers. That code is imprinted on each sprinkler’s deflector—the thin metallic part furthest away from a sprinkler’s threaded inlet.
What size are standard sprinkler heads?
Other than that, the only difference between a standard and quick response fire sprinkler head is the size of the bulb—standard response sprinklers have a 5 mm glass bulb, while quick response fire sprinklers have a 3 mm glass bulb.
How do I know what size my sprinkler head is?
The size of a sprinkler is determined by the height of the stem – the part that pops up. The part that stays in the ground is called a canister and should NOT be measured to determine size. Do NOT measure the entire sprinkler, either, meaning the canister and the pop-up.
Can you mix fire sprinkler heads?
NFPA 13 (2019) Section 9.4. 3.2 states that quick-response sprinklers shall not be mixed with any standard-response within a compartment unless some conditions apply.
What is a fast response sprinkler head?
Quick response sprinkler heads activate quickly, but they also work to discharge water higher up on the ceiling than a standard sprinkler head. This cools the ceiling and surrounding walls, helping prevent flash-over and keeping the fire from rising in temperature and severity.
What does K-factor mean in sprinklers?
discharge coefficient
The k-factor for a fire sprinkler is the discharge coefficient, or in normal human terms just relates to the amount of water that is permitted through the sprinkler. The k-factor is dependent upon the orifice diameter of the sprinkler – a low k-factor (such as K2.
What class is K fire?
The NFPA describes class K fires as those fires that involve combustible cooking materials such as vegetable oils that are used in cooking operations. These types of fires tend to spread rapidly and can result in injuries and massive building damage.