The TYCO TY3351 is the horizontal sidewall model of the TY-B series, with a K 5.6 discharge coefficient and 1/2″ NPT thread, standard response and standard coverage, operated by a glass bulb 5 mm. It is designed for light and ordinary hazard commercial occupancies such as banks, hotels and shopping malls. Installed along a wall or the side of a beam just below the ceiling, throwing water horizontally into the room. For where the sprinkler sits in the whole system, see the complete guide to sprinkler systems in Saudi Arabia.
In short
- Model (SIN): TY3351 — Horizontal Sidewall.
- Discharge coefficient K 5.6, 1/2″ NPT connection.
- Glass bulb 5 mm, standard response.
- Temperature ratings in the datasheet: 57 – 182 °C.
- Maximum working pressure: 175 psi (12.1 bar); 250 psi (17.2 bar) under UL.
- Series approvals: UL, C-UL, FM, LPCB, NYC (per Table A). The approval of each model, finish and rating is in the approvals table of datasheet TFP161.
How this sprinkler works
The glass bulb contains a fluid that expands when exposed to heat. When the rated temperature is reached, the fluid expands enough to shatter the bulb, the sprinkler opens and the deflector spreads the water over the fire area.
Installed along a wall or the side of a beam just below the ceiling, throwing water horizontally into the room. Standard response is typically used for storage and industrial areas, per the project design.
Models in the series
| SIN | Orientation | K-factor | Thread |
|---|---|---|---|
| TY3351 — this model | Horizontal Sidewall | 5.6 | 1/2″ NPT |
| TY3451 | Vertical Sidewall | 5.6 | 1/2″ NPT |
Links to the other models are in the “Similar models” table below. The choice of model comes from the hydraulic calculation, hazard classification and installation method in the project design.
Application notes
- Sidewall sprinklers are used instead of pendents or uprights for aesthetic or construction reasons where piping across the ceiling is not wanted.
- Corrosion-resistant finishes are available per the datasheet for corrosive atmospheres; the datasheet notes that corrosion tests do not represent every possible atmosphere, so suitability for the actual environment should be checked.
Technical data
| Item | Value |
|---|---|
| Model (SIN) | TY3351 |
| Orientation | Horizontal Sidewall |
| Discharge coefficient | K 5.6 gpm/psi½ (80.6 L/min/bar½) |
| Thread | 1/2″ NPT |
| Element and response | Glass bulb 5 mm — Standard Response |
| Coverage | Standard Coverage |
| Temperature ratings | 57 – 182 °C |
| Maximum working pressure | 175 psi (12.1 bar); 250 psi (17.2 bar) under UL |
| Installation torque | 7 – 14 lb-ft (9.5 – 19.0 N·m) |
| Wrench | W-Type 6 (W-Type 7 for recessed) |
| Escutcheon | Recessed horizontal sidewall: Style 10 only |
| Approvals | UL, C-UL, FM, LPCB, NYC (per Table A) |
| Datasheet | TYCO TFP161 |
The critical point: orientation and torque
The deflector orientation sets the throw direction, so install as shown in the datasheet. Torque 7 – 14 lb-ft (9.5 – 19.0 N·m).
Installation steps
- Inspect before installing: never install a sprinkler whose bulb is cracked or has lost liquid.
- Install the sprinkler in its correct orientation (Horizontal Sidewall) as shown in the datasheet — never reversed.
- Apply pipe-thread sealant to the threads, then hand-tighten the sprinkler.
- Finish with the specified wrench (W-Type 6 (W-Type 7 for recessed)) within 7 – 14 lb-ft (9.5 – 19.0 N·m). Higher torque can distort the inlet and cause leakage.
- With an escutcheon, use only the specified one (Recessed horizontal sidewall: Style 10 only) and never compensate for adjustment by changing the torque.
Common mistakes
- Installing a sprinkler that was dropped, struck or slipped by the wrench. The datasheet requires any such sprinkler to be replaced.
- Painting or coating sprinklers on site. Sprinklers must not be altered after leaving the factory; altered sprinklers are replaced.
- Hanging objects from sprinklers, or cleaning them with anything other than a gentle feather duster.
Maintenance
Sprinklers that leak or show visible corrosion must be replaced, as must sprinklers exposed to corrosive products of combustion that cannot be fully cleaned. The owner is responsible for inspection, testing and maintenance to NFPA 25 and the authority having jurisdiction, preferably by a qualified inspection service. Before closing a main control valve for maintenance, obtain permission from the proper authorities and notify everyone affected.
Files and ordering
TYCO datasheet TFP161 and the available approval certificates are in the files section of this page. When ordering, state the model TY3351, temperature rating and finish, escutcheon. The datasheet lists the part numbers (P/N) for each combination.
How to order
Use the “Build your order” section on this page: add every model and quantity, then send the whole order by email or WhatsApp. It reaches us as a tidy PDF request sheet and we contact you with the quotation.
FAQ
What does TY3351 mean?
It is TYCO’s Sprinkler Identification Number (SIN). It identifies the exact model — orientation, K-factor and thread. The sprinkler is ordered by this number together with temperature rating and finish.
How do I choose the temperature rating?
From the highest expected ceiling temperature and the rating classes in the project’s governing standard, within the ratings available for this model in the datasheet.
Do all models in the series carry the same approvals?
Not always. The approvals table in datasheet TFP161 gives each model’s approvals by rating and finish, so check it when the project requires a specific approval.
References
- TYCO TFP161 — Series datasheet (attached)
- NFPA 13 — Standard for the Installation of Sprinkler Systems
- NFPA 25 — Inspection, Testing and Maintenance of Water-Based Fire Protection Systems
- TYCO TFP700 — Installer warning for handling and installing sprinklers
This page is general information to help with selection and ordering, taken from the attached TYCO datasheet. Final design is set by the project’s approved designer; the project specification, the consultant’s drawings and the latest datasheet revision govern.
