Installing new or replacing old sprinkler heads can seem like a complicated process. While many of the sprinkler heads available share resemblance with each other, different fire sprinklers heads are meant for specific applications or environments, and require a thoughtful approach.
There are four common fire sprinkler heads: concealed sprinkler heads, upright sprinkler heads, sidewall sprinkler heads, special fire sprinkler heads, and pendant fire sprinkler heads. In this blog, we are going to discuss how long these sprinkler head systems last, how often they require maintenance, and what applications they are most used for.
Maverick Fire and Safety is your #1 Fire Protection Company, we specialize in all fire safety installation, inspections, maintenance and repair for all fire sprinkler systems, both commercial and residential properties. If you already know which service you need, or want more information, give Maverick Fire and Safety a call today (832)653-2598.
First, How Do Fire Sprinkler Heads Work?
Most fire sprinkler heads are made up of similar components: a plug or sealing assembly to stop water from leaking, a heat-sensitive component which activates when temperatures elevate, a deflector to spread the water effectively, and a sturdy frame holding all the components in place.
Fire Sprinkler heads are normally available in two sizes, ½’ (12.7mm) and ¾’(19.3mm.) The former size is typically found for most office buildings, hotels, and/or schools. The latter, however, is used for more challenging environments where large amounts of water may be necessary. If you require fire sprinkler service from a fire contractor, trust Maverick Fire and Safety. Your go-to fire safety company. Call us today at (832)653-2598.
Fire Sprinkler Head Bulb Ratings
A fire sprinkler’s head temperature rating is the threshold at which the sprinkler activates. These ratings vary widely, typically 135°F and 650°F (38°C to 343°C.) The rating can be identified by the specific color indicators: glass-bulb sprinklers use colored liquid within the bulb, while fusible link sprinklers feature a color-coded paint mark or dot on the frame.
Here are the Temperature Classifications Ranges from The National Fire Protection Association (NFPA).
|
Max Ceiling Temperature °F (°C) |
Temperature Rating °F (°C) |
Temperature Classification |
Glass Bulb Colors |
Color Code |
|
100 (38) |
135-170 (57-77) |
Ordinary |
Orange or Red |
Uncolored or Black |
|
150 (66) |
175-225 (79-107) |
Intermediate |
Yellow or Green |
White |
|
225 (107) |
250-300 (121-149) |
High |
Blue |
Blue |
|
300 (149) |
325-375 (163-191) |
Extra High |
Purple |
Red |
|
375 (191) |
400-475 (204-246) |
Very Extra High |
Black |
Green |
|
475 (246) |
500-575 (260-302) |
Ultra High |
Black |
Orange |
|
625 (329) |
650 (343) |
Ultra High |
Black |
Orange |
What is a Pendent Sprinkler Head?
A pendent fire sprinkler (often misspelled as “pendant”) is mounted on pipes above the ceiling and releases water in a domed or conical spray pattern thanks to its convex deflector. Unlike concealed pendent sprinklers, which are installed behind decorative covers, the head of a standard pendent sprinkler remains visible after installation.
- Hangs down from ceiling
- Ideal for offices, hotels, and factories.
- Sprays water downward in a circular pattern.
- It’s common for weekly, monthly, or quarterly inspections.
Concealed Pendent Heads
Concealed fire sprinklers are installed within walls or ceilings, where a heat-sensitive cover plate fully conceals the pendent or sidewall sprinkler head. This cover plate detaches when temperatures reach roughly 20°F lower than the sprinkler head’s activation temperature, allowing the sprinkler’s deflector to drop down and activate the system.
- Located within the ceiling or walls and are hidden by a cover plate.
- This cover plate detaches when temperatures reach roughly 20°F lower than the sprinkler head’s activation temperature
- Ideal when “aesthetics” are concerned.
- Activation Temperatures normally set at 139°F for 155°F sprinklers and 165°F for 200°F sprinklers.
Upright Sprinkler Heads
Upright fire sprinklers direct water upward against a concave deflector, creating a dome-shaped spray pattern. They are installed with the deflector facing upward, which helps prevent ice and debris from accumulating on the head. Upright sprinklers are ideal for areas with overhead obstructions that might hinder coverage in other system types and are commonly used in dry-pipe systems to withstand freezing conditions.
- Stands Upright
- Sprays water upwards in a hemispherical pattern
- Useful for building with exposed ceilings
Side Wall Sprinkler Heads
Sidewall fire sprinklers are mounted along walls or under beams where ceiling piping isn’t feasible, or where visual appeal and potential obstructions make other sprinkler types impractical. Typically designed to protect compact areas like small rooms, closets, or hallways, they feature a semicircular deflector that creates a crescent-shaped spray pattern for effective coverage.
- Mounted on the side of the wall, only half of a deflector present.
- Great for small rooms, hallways, and places sprinkler pipes may be present.
- Spray water in a half circle.
If you are looking to make your business or home fire safe throughout the year, trust Maverick Fire and Safety. We have a collective 2.5 decades worth of experience designing, installing, inspecting, and repairing residential and commercial fire protection systems. We serve clients all throughout Texas, if you are interested in finding out more about our services and protecting your home or business, give us a call today at (832)653-2598, schedule a free consultation here.
