Concealed Sprinkler
Concealed Sprinkler are aesthetically designed fire sprinkler heads featuring a hidden design behind a flat cover plate.
The cover plate is heat-sensitive and detaches at a specific temperature, exposing the sprinkler for activation.
These are ideal for premium interiors such as hotels, offices, residential apartments, showrooms, malls, and luxury spaces where appearance is a priority.
They come in quick-response models with multiple K-factors, temperature ratings, and custom finish cover plates.
Concealed Fire Sprinklers are aesthetically designed sprinkler heads installed flush with the ceiling, covered by a decorative, heat-sensitive cover plate. When the ambient temperature increases to the cover-plate rating, the plate detaches, allowing the sprinkler to activate. Concealed sprinklers deliver reliable fire protection while maintaining a clean, unobtrusive ceiling finish. They are commonly used in hotels, residential buildings, offices, malls, showrooms, theaters, and luxury interiors.
Concealed Sprinkler Categories
Fire Fighting Equipment
Fire Sprinkler System Components
Concealed Type Sprinklers
Aesthetic Sprinklers
Quick Response Sprinklers
Residential Sprinklers
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Concealed Sprinkler Description
Standard: ANSI/ UL 199
K factor: K 5.6
Response: Standard / Quick
Thread: NPT/ BSPT
W. pressure: 175 psi (1.21 MPa)
Finish: White/ customized (cover plate)
Temp. Rating Approvals
68°C (155°F) for Sprinkler bulb & 57°C (135°F) for Cover Plate, for Quick Response Sprinkler. 57°C & 68°C (135° & 155°F) for Sprinkler bulb & 57°C (135°F) for Cover Plate, for Standard Response Sprinkler.
79°C & 93°C (135° & 155°F) for Sprinkler bulb & 68°C (155°F) for Cover Plate for Standard Response Sprinkler.
Technical Specifications
Available K-Factors
K4.2
K4.9
K5.6
K5.8 (Extended Coverage)
Thread Size
1/2″ NPT
3/4″ NPT (High K-Factor / EC models)
Response Type
Quick Response (QR)
Standard Response (SR)
Working Pressure
Maximum Working Pressure: 175 psi (12 bar)
Factory Hydrostatic Test: 500 psi (34.5 bar)
Water Distribution Pattern
Pendent-type discharge pattern
Designed for installation in concealed ceilings
Uniform water distribution for residential & commercial fire protection
Optimized for low-to-medium ceiling heights
Concealed Sprinklers (Sizes + SKU Codes)
| Model | K-Factor | Thread Size | Temp Rating | Cover Plate Temp | Finish | SKU Code |
| Concealed Sprinkler – QR | K4.2 | 1/2″ NPT | 68°C | 57°C | White | CSC-42-12-68-57-WH |
| Concealed Sprinkler – QR | K5.6 | 1/2″ NPT | 68°C | 57°C | Chrome | CSC-56-12-68-57-CR |
| Concealed Sprinkler – SR | K5.6 | 1/2″ NPT | 79°C | 68°C | White | CSC-56-12-79-68-WH |
| Concealed Sprinkler – QR | K4.9 | 1/2″ NPT | 68°C | 57°C | Custom RAL | CSC-49-12-68-57-CRL |
| Extended Coverage Concealed | K5.8 | 3/4″ NPT | 93°C | 79°C | White | CSC-58-34-93-79-WH |
Size Description Sprinkler
| No. | Size | Galv/Black | Des |
| 55-5620 | 1/2 | — | K-F 5.6/Chrome |
| 55-5621 | 3/4 | — | K-F 8.1/Brass |
Installation Requirements
Install per NFPA 13 / NFPA 13R / NFPA 13D
Concealed type must be installed flush with ceiling
Do not install without cover plate
Maintain gap and spacing as per manufacturer’s specification
Suitable only for pendent orientation
Use correct temperature rating based on ambient conditions
Sample Time: Available in 5-10 days for different items.
Drawing Format: CAD / PDF / DWG / IGS / STEP.
Packaging: Standard package, Carton box or Pallet, As per customized specifications
Shipping: DHL, FEDEX, UPS and By Sea or as per client’s requirements.

