Fire Sprinklers: UL Listed and FM Approved Automatic Sprinkler Line
ValveAtlas stocks an automatic fire sprinkler line — UL Listed and FM Approved (on core configurations) sprinkler heads for commercial, institutional, and residential fire protection systems across Canada and the Northeastern United States. The range covers the K-factors, orientations, and response categories that satisfy the vast majority of NFPA 13, NFPA 13R, and NFPA 13D sprinkler system specifications.
For specifiers, mechanical contractors, and fire protection engineers working on Toronto, Montreal, New York, and Boston projects, we provide a listed sprinkler line at competitive commercial terms with Toronto-warehoused stock availability.
Sprinkler product range
Standard response upright and pendent sprinklers (K=5.6)
K=5.6 upright and pendent sprinkler heads are the most commonly installed sprinkler configuration in commercial fire protection — office ceilings, retail, institutional, industrial, and warehouse applications under NFPA 13 light hazard and ordinary hazard occupancy classifications. Our K=5.6 standard response heads are UL Listed and FM Approved with UL listings for Canadian submittals.
Orifice: 1/2-inch standard orifice, K=5.6 (imperial) / K=80 (metric)
Response: standard response (SR) fusible link or frangible bulb
Temperature ratings: 135°F / 57°C (ordinary), 155°F / 68°C (ordinary), 175°F / 79°C (intermediate), 200°F / 93°C (intermediate), 286°F / 141°C (high), 360°F / 182°C (extra high)
Finishes: brass, chrome-plated, white polyester coated, black polyester coated
Thread: 1/2-inch NPT
Quick response upright and pendent sprinklers (K=5.6)
Quick response (QR) K=5.6 heads for light hazard commercial occupancies — offices, classrooms, hospital patient rooms, hotel corridors, retail — where faster activation time improves life-safety response. UL Listed, FM Approved where applicable, UL listed for Canadian code compliance.
Orifice: 1/2-inch standard orifice, K=5.6
Response: quick response (QR) frangible bulb
Temperature ratings: ordinary and intermediate ranges (ordinary 135°F / 155°F, intermediate 175°F / 200°F typical for light hazard applications)
Finishes: brass, chrome-plated, white polyester, black polyester
Thread: 1/2-inch NPT
Sidewall sprinklers (K=5.6)
Horizontal sidewall sprinkler heads for NFPA 13R residential corridor, hotel and motel room, hospital patient room, and similar applications where ceiling-mounted pendent or upright is not practical. Throw-pattern listed per UL 199 (residential or commercial, depending on model variant).
Orifice: 1/2-inch standard orifice, K=5.6
Response: standard response and quick response variants
Orientation: horizontal sidewall, throw-pattern tested
Temperature ratings: ordinary and intermediate
Finishes: brass, chrome-plated, white polyester
Thread: 1/2-inch NPT
Concealed pendent sprinklers (K=5.6 and K=8.0)
Concealed pendent sprinklers with factory-finished cover plates for finished ceiling applications — the go-to configuration for office ceilings, hospital corridors, hotel rooms, condo units, restaurant dining rooms, and any interior where the sprinkler must be architecturally concealed. Standard cover plates are white; custom cover plate colours are available on project order to match ceiling finish schedules.
Orifice: K=5.6 and K=8.0
Response: standard and quick response variants
Cover plate temperature: matched to head activation temperature per UL-listed combinations
Cover plate finishes: white (stocked), custom colours on project order
Listings: UL Listed; FM Approved status confirmed on a per-model basis; UL Listed for Canadian submittals
Thread: 1/2-inch NPT (K=5.6), 3/4-inch NPT (K=8.0)
Extended coverage sprinklers (K=8.0)
K=8.0 extended coverage sprinkler heads for ordinary hazard group 2 applications and extended-coverage light hazard installations where standard K=5.6 heads would require closer spacing. Used in retail, mercantile, light manufacturing, and similar occupancies.
Orifice: K=8.0
Orientation: upright, pendent, and concealed pendent configurations
Response: standard response and quick response
Listings: UL Listed; FM Approval on K=8.0 confirmed per model; UL Listed for Canadian projects
Thread: 3/4-inch NPT
Residential sprinklers (UL 199)
Residential listed sprinklers under UL 199 for NFPA 13D single-family dwelling and NFPA 13R multi-family residential sprinkler systems. Pendent, sidewall, and concealed pendent orientations available. Quick response activation for bedroom and living area life-safety coverage. Residential sprinklers are category-specific — the residential listing is what differentiates a residential-listed head from a commercial head.
Listing: UL 199 residential
Orientation: pendent, sidewall, concealed pendent
Response: quick response (standard for residential applications)
Temperature: ordinary (155°F / 68°C typical) and intermediate as required
Cover plate colours (concealed): white stocked, custom colours on project order
Listings profile summary
Our sprinkler heads carry the following certifications:
UL Listed — Underwriters Laboratories listing for US and Canadian sprinkler code compliance. The baseline certification across our sprinkler line.
FM Approved — Factory Mutual approval for insurance-driven specifications. K=5.6 standard-response heads carry FM Approved status as the baseline certification. K=8.0 and concealed pendent configurations carry UL Listed status with FM approval confirmed on a per-model basis at time of quote.
UL 199 (residential) — residential sprinkler listing applicable to NFPA 13R and NFPA 13D residential sprinkler installations. Available on residential-specific models in our sprinkler line.
Applications and occupancy coverage
Commercial occupancies — offices, retail, restaurants, classrooms, conference centres, public assembly. K=5.6 pendent or upright heads in standard or quick response, ordinary or intermediate temperature rating, typically concealed pendent in finished ceilings and upright in exposed structure.
Institutional — hospitals, schools, universities, government buildings, libraries. K=5.6 quick response concealed pendent is the dominant configuration in patient rooms, corridors, and classrooms. K=8.0 extended coverage where open-plan spaces benefit from reduced head count.
Residential — apartments, condominiums, hotels, motels, townhouses, single-family homes. UL 199 residential listed sprinklers in pendent, sidewall, and concealed pendent orientations. Quick response activation. Concealed pendent with custom cover plate colours for premium condo and hospitality applications.
Industrial and warehouse — light manufacturing, distribution centres, cold storage, parking garages. K=5.6 standard response commercial heads for light to ordinary hazard occupancies; K=8.0 extended coverage for ordinary hazard group 2. Dry pipe sprinkler heads (pendent and upright) for unheated spaces.
Parking garages and exposed structure — upright K=5.6 heads in dry pipe systems for unheated parking structures, wet pipe systems in heated garages, intermediate temperature rating where the ceiling sits close to vehicle exhaust heat.
Stock and lead time
Sprinkler heads in the core commercial configurations — K=5.6 and K=8.0, standard response and quick response, brass and chrome-plated finishes, ordinary and intermediate temperature ratings, concealed pendent with white cover plates — are stocked from our Toronto warehouse with typical lead time of a few business days from order confirmation to shipment.
Non-standard configurations — custom cover plate colours for concealed pendent, specialty temperature ratings (high / extra high), black polyester coated finishes, residential UL 199 heads with specific activation temperature and cover plate temperature matching — ship on project order with lead time confirmed at quote stage, typically in the multi-week range depending on factory schedule.
For sprinkler-heavy projects with aggressive delivery schedules — multi-unit residential construction with thousands of concealed pendent heads, phased multi-floor commercial construction, or retrofit projects where the originally specified brand has long lead times — our stock position is often the decisive factor in hitting the construction schedule.
Approved-equal submittals
Where a specification names a specific manufacturer, we prepare an approved-equal submittal package (listing certificates, dimensional drawings and material data) for review by the engineer of record and the authority having jurisdiction.
Frequently asked questions
Are your sprinklers accepted under the Ontario Building Code and Ontario Fire Code? Yes. Our core sprinklers carry UL Listed status. The Ontario Building Code and Ontario Fire Code reference NFPA 13 and NFPA 14, which require listed sprinkler hardware. Our UL-listed sprinklers satisfy the Ontario code reference directly.
Are your sprinklers accepted by FDNY for New York City installations? The New York City Construction Code and the FDNY Bureau of Fire Prevention reference NFPA 13 for sprinkler system design, which requires UL Listed sprinkler hardware. Our UL Listed sprinklers with FM Approval (on the K=5.6 core line) satisfy FDNY plan review requirements. FM Approval is typically preferred for commercial and high-rise installations in NYC.
Can your sprinklers be submitted as an approved equal on a residential (NFPA 13R) condominium project? Yes, where the proposed head is UL 199 residential listed at the matching activation temperature and (for concealed pendent) with matching cover plate colour and temperature combination. The approved-equal submittal package documents the listing match for engineer review.
Do your concealed pendent heads come with custom cover plate colours? Standard white cover plates are stocked. Custom cover plate colours — matte black, bronze, custom architectural matches — are available on project order with lead time confirmed at quote stage.
What K-factors does your sprinkler line cover, and does it include ESFR? Our sprinkler line covers K=5.6 (the volume sprinkler orifice in commercial, institutional, and residential construction) and K=8.0 (extended coverage and ordinary hazard group 2), plus ESFR pendent and upright sprinklers at K=16.8 and K=25.2 for high-pile storage and warehouse applications.
What dimensional standards do your sprinkler heads follow? Our sprinklers use 1/2-inch NPT inlet threads for K=5.6 heads and 3/4-inch NPT for K=8.0 heads, matching the North American fire protection industry standard. Cover plate mounting for concealed pendent follows the standard two-piece pendent assembly with field-adjustable cover plate height.
Request a sprinkler quote
For a project-specific quote on sprinkler heads — commercial concealed pendent, residential concealed pendent with custom cover plate colours, standard K=5.6 pendent and upright, K=8.0 extended coverage, or sidewall for NFPA 13R residential — contact ValveAtlas at info@valve-atlas.com or through the contact form on our website. Include the project size range, required listings (UL and FM, UL 199 residential), and approximate sprinkler count; we respond with pricing, stocked vs project-lead-time configurations, and the approved-equal submittal package within 48 hours.
For regional delivery context see our Toronto, Montreal, New York, and Boston fire protection supplier pages.
Fire Sprinkler FAQ
What is the difference between K=5.6 and K=8.0 fire sprinklers?
K-factor is the discharge coefficient that controls how much water flows through a sprinkler at a given pressure. K=5.6 sprinklers deliver standard light/ordinary hazard coverage (NFPA 13) for offices, residential, and light commercial. K=8.0 sprinklers deliver more water for ordinary hazard Group 2 and high-pile storage applications. Use K=5.6 for typical 130-225 sq ft coverage; K=8.0 for high-density extra hazard areas.
When should I use a pendent vs upright vs sidewall sprinkler?
Pendent sprinklers point downward and install below ceiling — ideal for finished ceilings in offices, hotels, residential. Upright sprinklers point upward and install on top of overhead piping — used in warehouses, parking garages, exposed-pipe installations. Sidewall sprinklers spray water horizontally from walls — used in narrow corridors, hotel rooms, and aesthetic-sensitive areas where overhead piping is undesirable.
Are your sprinklers UL Listed and FM Approved?
Yes — our fire sprinklers carry UL Listed certification (UL Solutions database) and FM Approved status for NFPA 13 / NFPA 13R / NFPA 13D installations across North America. Each sprinkler shipment includes the original UL Listing certificate and FM Approval letter for AHJ submittal. ULC certification is provided for Ontario (OBC) and Quebec (CCQ) projects.
What is the response time index (RTI) of quick response vs standard response sprinklers?
Quick Response (QR) sprinklers have an RTI ≤ 50 (m·s)^0.5 and activate faster — required for NFPA 13R residential and NFPA 13 light hazard. Standard Response (SR) sprinklers have RTI between 80-350 (m·s)^0.5 — used in ordinary hazard, storage occupancies, and applications where pre-wetting adjacent areas is needed for fire containment.
What sprinkler temperature rating do I need for my application?
For typical occupied spaces use 155°F / 68°C (ordinary). Kitchens, mechanical rooms, attics require 175°F / 79°C (intermediate). Boiler rooms and elevated temperature areas use 200°F / 93°C (intermediate). NFPA 13 specifies temperature ratings based on maximum ambient temperature — sprinkler must be rated at least 30°F above max ambient.
How much do fire sprinklers cost in Canada?
Our fire sprinkler prices typically range CA$5.30 – CA$11.50 per head for standard K=5.6/K=8.0 brass, white-coated, or chrome finish. Concealed sprinklers with cover plates run CA$13–18. Pricing includes UL/FM certification and ULC for Ontario submittals. Bulk pricing available for projects requiring 100+ heads. Contact for project-specific quote with documentation.
Do you supply concealed sprinklers with white cover plates?
Yes — our UV820 concealed sprinklers feature a white cover plate that drops at 135°F / 57°C, exposing the K=5.6 quick response sprinkler. Designed for finished ceilings in hotels, healthcare, residential, and high-end commercial. UL Listed for light and ordinary hazard NFPA 13/13R applications.
What is the typical lead time for sprinkler orders in Toronto?
Standard sprinkler heads (K=5.6, K=8.0, pendent, upright, sidewall in white, brass, or chrome) ship from our Toronto inventory within 1-3 business days for Ontario. Cross-border US orders (NY, Boston) ship in 5-7 business days with full documentation. Project lots of 1000+ heads may require 2-3 weeks based on availability — always confirm before quoting.