22.5 Degree Grooved Elbow | Ductile Iron 1″–12″

The 22.5° Grooved Elbow provides a smooth change in direction for grooved-end piping systems while maintaining full flow. Manufactured from ductile iron (ASTM A536) with corrosion-resistant coating, it mates with roll-grooved or cut-grooved steel pipe and installs quickly using standard grooved couplings.

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22.5 degree grooved elbow grooved elbow 22.5° ductile iron grooved elbow AWWA C606 elbow EPDM gasket grooved elbow NBR gasket grooved elbow 1 inch grooved elbow 2 inch grooved elbow 4 inch grooved elbow 6 inch grooved elbow

Product Description

Production equipment

Packaging and Shipping

Product Description

Dimensions follow AWWA C606 groove requirements and fitting pressure capability conforms to the installed coupling’s rating (size-dependent). Gasket options include EPDM for water service and NBR for oils/fuels. Finishes are available in orange paint or hot-dip galvanized for enhanced corrosion resistance.
Sizes: DN25–DN300 (1″–12″) standard; larger diameters may be available upon request. Industry catalogs commonly cover from ¾″ up to 24″, with elbows offered in 11.25°, 22.5°, 45° and 90° variants. Working pressure is determined by the coupling series and pipe schedule. Please refer to your coupling’s table for the exact rating per size.

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

沟槽管件的生产流程

grooved fitting 生产实力组合图

Applications of 22.5 Degree Elbow

The 22.5 Degree Elbow is designed to provide a gentle and controlled change of pipeline direction, making it an ideal solution where a small deflection angle is required instead of a sharp turn.

Typical Applications

Fire protection systems
Commonly used in sprinkler and fire main pipelines to fine-tune routing while maintaining stable flow and pressure. FM approved and UL certified versions meet fire system requirements.
Grooved piping systems
Widely applied in grooved pipe installations where precise alignment and modular assembly are required.
Main pipeline direction adjustment
Often installed between two straight pipe sections to achieve gradual direction changes, reducing stress and turbulence compared to larger-angle elbows.
Industrial and municipal pipelines
Suitable for water supply, industrial process piping, and utility systems operating up to 300 PSI.
Space-constrained installations
Ideal where layout restrictions prevent the use of 45° or 90° elbows, allowing smoother routing with minimal impact on flow.

FAQ – 22.5 Degree Elbow

Q1: What is a 22.5 degree elbow used for?

A 22.5 degree elbow is used to change the direction of a pipeline slightly, offering smoother flow transition and better alignment compared to sharper-angle elbows.

Q2: How does a 22.5° elbow differ from 45° and 90° elbows?

22.5°: Small, gradual direction change, lower flow resistance
45°: Moderate direction change
90°: Sharp direction change
The 22.5° elbow is preferred when precision routing and reduced stress are required.