The TYCO TY7229 is the dry pendent model of the ESFR-17 Dry series, with a K 16.8 discharge coefficient and 1″ NPT / grooved thread, early suppression, fast response (esfr) and esfr storage sprinkler, operated by a fusible link. It is designed for box-in-box refrigerated storage and storage subject to freezing, with ceiling-only protection without in-rack sprinklers. A dry-type sprinkler installed pendent, with its barrel extending into the area exposed to freezing. For where the sprinkler sits in the whole system, see the complete guide to sprinkler systems in Saudi Arabia.
In short
- Model (SIN): TY7229 — Dry Pendent.
- Discharge coefficient K 16.8, 1″ NPT / grooved connection.
- Fusible link, early suppression, fast response (esfr).
- Temperature ratings in the datasheet: 74 / 100 °C.
- Maximum working pressure: Per datasheet.
- Series approvals: UL, C-UL, FM. The approval of each model, finish and rating is in the approvals table of datasheet TFP320.
How this sprinkler works
The fusible link is made of two halves joined by a thin layer of solder. When the rated temperature is reached the solder melts, the halves separate and the sprinkler opens to flow water.
In a dry-type sprinkler a plug with sealing assembly at the inlet keeps water out of the sprinkler barrel while in service. When the element operates, the seat is released and a spring drives the plug clear, so water enters and discharges. The barrel extending into the cold area therefore stays free of water.
A dry-type sprinkler installed pendent, with its barrel extending into the area exposed to freezing. An ESFR sprinkler works in suppression mode: a large volume of water with strong droplets early on, to suppress the fire rather than only control it.
Models in the series
| SIN | Orientation | K-factor | Thread |
|---|---|---|---|
| TY7229 — this model | Dry Pendent | 16.8 | 1″ NPT / grooved |
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
- An ESFR sprinkler permanently secured to a dry drop with an inlet accepting threaded or grooved connections, so the drop stays dry until operation. It is installed off a wet system into the refrigerated area.
Technical data
| Item | Value |
|---|---|
| Model (SIN) | TY7229 |
| Orientation | Dry Pendent |
| Discharge coefficient | K 16.8 gpm/psi½ (241.9 L/min/bar½) |
| Thread | 1″ NPT / grooved |
| Element and response | Fusible link — Early Suppression, Fast Response (ESFR) |
| Coverage | ESFR storage sprinkler |
| Temperature ratings | 74 / 100 °C |
| Maximum working pressure | Per datasheet |
| Installation torque | 20 – 30 lb-ft (26.8 – 40.2 N·m) |
| Wrench | W-Type 26 (for removal from a threaded connection) |
| Approvals | UL, C-UL, FM |
| Datasheet | TYCO TFP320 |
The critical point: fitting and exposed length
Install only in the fittings listed in Design Criteria and handle by the casing only. The exposed barrel length in the warm area must meet the minimum in Table A for the protected-area temperature.
Installation steps
- Confirm the fitting is one of the types listed in the datasheet’s Design Criteria section.
- Install the sprinkler in its correct orientation (Dry Pendent) 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 26 (for removal from a threaded connection)) within 20 – 30 lb-ft (26.8 – 40.2 N·m). Higher torque can distort the inlet and cause leakage.
Common mistakes
- Installing the dry sprinkler in an unlisted fitting, or with less than the minimum exposed length in the table, so water freezes inside the barrel.
- 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 TFP320 and the available approval certificates are in the files section of this page. When ordering, state the model TY7229, temperature rating and finish, and the required length. 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 TY7229 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 TFP320 gives each model’s approvals by rating and finish, so check it when the project requires a specific approval.
Why a dry-type sprinkler rather than a standard one?
The barrel extending into the cold area stays free of water until operation, so it cannot freeze, while the water stays in the heated part of the system.
Does the warehouse need in-rack sprinklers?
ESFR sprinklers are for ceiling-only protection in the applications given in the datasheet and governing standard (NFPA or FM Global), removing the need for in-rack sprinklers within those conditions.
References
- TYCO TFP320 — 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.
