UTT20
UTTERLY
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The UTT20 Longitudinal "In-Line" Sway Bracing Attachment is an engineered component specifically developed for fire protection piping systems requiring seismic and sway bracing. As the pipe attachment element of a complete sway brace system, it is designed to connect the sprinkler pipe to the structural attachment fitting via a bracing pipe element, creating a fully integrated and code-compliant bracing assembly.
Manufactured from high-quality carbon steel, the UTT20 delivers exceptional strength and structural integrity under dynamic loading conditions. The electro-galvanized finish provides a uniform, corrosion-resistant surface that extends the service life of the attachment even in challenging indoor environments. This finish also ensures compatibility with other galvanized components commonly used in sprinkler systems.
The UTT20 is designed to accommodate a wide range of pipe sizes, from 2" (50mm) through 8" (200mm), making it suitable for both small branch lines and large mains in commercial, industrial, and institutional sprinkler installations. Its compatibility with multiple pipe schedules—Sch 10, Sch 40, GB/T 3091, and JIS G3454—ensures versatility across different project specifications and regional standards.
The UTT20 has been rigorously tested and certified by both UL (Underwriters Laboratories) and FM (Factory Mutual), two of the most respected independent testing and certification organizations in the fire protection industry. These certifications provide engineers, contractors, and building owners with the confidence that the product meets the highest standards of safety, reliability, and performance.
Item | Specification |
|---|---|
Model | UTT20 |
Product Type | Longitudinal "In-Line" Sway Bracing Attachment |
Function | Bracing pipe against sway and seismic disturbance |
Compatible Pipe Schedules | Sch 10, Sch 40, GB/T 3091, JIS G3454 |
Pipe Size Range | 2" (50mm) through 8" (200mm) |
Material | Carbon Steel |
Finish | Electro-galvanized |
Certification | UL Listed / FM Approved |
Compliance | NFPA 13 |
Order By | Part No. UTT20 |
UL Maximum Design Load | |||||
Pipe Size | lbs. | kN | Wt. Each | ||
1＂(25mm) Brace Pipe | |||||
lb. | kg | ||||
2＂ | (50) | 680 | (3.02) | 2.33 | (1.06) |
2½＂ | (65) | 680 | (3.02) | 2.42 | (1.1) |
3＂ | (80) | 680 | (3.02) | 2.55 | (1.16) |
4＂ | (100) | 680 | (3.02) | 2.73 | (1.24) |
5＂ | (125) | 1090 | (4.84) | 3.92 | (1.78) |
6＂ | (150) | 1370 | (6.09) | 4.29 | (1.95) |
8＂ | (200) | 1370 | (6.09) | 4.93 | (2.24) |
FM Maximum Design Load | |||||||
Pipe Size | Horizontal load ratings installation angle 30°-44° | Horizontal load ratings installation angle 45°-59° | Wt. Each | ||||
1＂(25mm) Brace Pipe | |||||||
Ibs. | kN | Ibs. | kN | lb. | kg | ||
2＂ | （50） | 1070 | (4.75) | 1440 | (6.40) | 2.33 | (1.06) |
2½＂ | （65） | 840 | (3.73) | 1120 | (4.98) | 2.42 | (1.1) |
3＂ | （80） | 1030 | (4.58) | 1560 | (6.93) | 2.55 | (1.16) |
4＂ | （100） | 650 | (2.89) | 890 | (3.95) | 2.73 | (1.24) |
6＂ | （150） | 830 | (3.69) | 1250 | (5.56) | 3.92 | (1.78) |
8＂ | （200） | 880 | (3.91) | 1150 | (5.11) | 4.29 | (1.95) |
These load ratings demonstrate the UTT20's capability to handle significant seismic and dynamic forces, ensuring that sprinkler piping remains securely braced during seismic events. The variation in FM load ratings by installation angle allows for flexible system design while maintaining code compliance.
The UTT20 Longitudinal "In-Line" Sway Bracing Attachment is ideally suited for a wide range of fire protection applications, including:
Commercial buildings – Office towers, shopping centers, hotels, and hospitals
Industrial facilities – Factories, warehouses, power plants, and processing facilities
Institutional structures – Schools, universities, government buildings, and correctional facilities
High-risk environments – Facilities requiring enhanced seismic protection per local building codes
When installed as part of a complete sway brace system—comprising the UTT20 attachment, a compatible UTT Manufacturing structural attachment fitting, and an intervening brace pipe element—the assembly provides robust bracing that resists lateral movement caused by seismic activity or mechanical vibration.
Installation must be performed in strict accordance with NFPA 13 (Standard for the Installation of Sprinkler Systems) and the manufacturer's published installation instructions. Proper spacing, angle orientation, and torque specifications must be observed to achieve the rated load capacities. Regular inspection and maintenance of all sway brace components are recommended to ensure long-term system integrity.
For project-specific engineering support, bulk ordering, or technical documentation, please contact our sales team.
