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Overview
The 11.5 Degree Grooved Elbow is a precision-engineered pipe fitting designed to provide a very slight change in pipeline direction in grooved piping systems. Compared with 22.5°, 45°, and 90° elbows, the 11.5° elbow allows for fine alignment and gradual direction correction, helping installers achieve accurate routing while minimizing flow resistance and system stress. It is widely used in fire protection, HVAC, and industrial piping systems where precision and smooth flow transition are required.
Product Description
The 11.5° grooved elbow is manufactured from high-strength ductile iron, featuring grooved ends that ensure quick and secure connection with grooved couplings. Its compact design allows installers to make small directional adjustments without adding multiple fittings or cutting pipes. The grooved connection ensures reliable sealing performance, fast installation, and easy system modification or maintenance.
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| Material: | ASTM A536,GRADE 65-45-12,QT450-10 |
| Threads: | ASME B1.20.1,ISO 7-1,BS21,BSPT,NPT,GB 7306 |
| Size: | ISO6182,AWWA C606 |
| Size Available: | 1"-12" |
| Surface Treatment: | Electrophoretic painted,Electroplated, Epoxy, Hot-dip Galvanized |
| Air pressure and holding pressure schedule | ||||||
| NO. | Size | Pressure | Time to keep the pressure | Remark | ||
| 1 | ≤DN50 | ≥0.5MPa | ≥5s | Air pressure | ||
| 2 | >DN50~DN350 | ≥0.5MPa | ≥10s | Air pressure | ||
| 3 | >DN350 | 1.5times the rated working pressure | 5min | water pressure | ||
Main production process
Small-angle design (11.5°) for precise pipeline alignment
Grooved ends for quick, secure, and efficient installation
Reduced flow resistance due to smooth directional transition
High-strength ductile iron construction for durability and impact resistance
Compatible with standard grooved couplings
Available with corrosion-resistant coatings for different environments
Fine direction adjustment in grooved piping systems
Fire protection systems, including sprinkler and fire main pipelines
HVAC piping systems requiring precise routing
Industrial and municipal pipelines where smooth flow and low stress are essential
Space-limited installations where larger-angle elbows are not suitable
The 11.5° grooved elbow helps reduce stress concentration and turbulence, improving overall system reliability and longevity.
It is used to make small and precise directional changes in a pipeline, allowing accurate alignment without excessive fittings.
Use an 11.5° elbow when only minor directional correction is needed or when smoother flow and minimal stress are required.
The elbow is typically made from ductile iron, offering high strength, toughness, and long service life.
Yes. The 11.5° grooved elbow is commonly used in fire protection and sprinkler piping systems, subject to applicable approvals and specifications.
Installation is fast and simple using standard grooved couplings, with no welding or threading required.
Grooved connections offer quick installation, flexibility, reliable sealing, and easy maintenance, making them ideal for modern piping systems.
