Standard 45° YL branch fittings are used to create branch connections within industrial vacuum, dust collection and pneumatic conveying systems. The YL configuration connects a branch line to a main tubing run while providing a smoother transition than a conventional square tee.
YL fittings are commonly used in central vacuum systems, material handling lines, dust collection piping and pneumatic conveying installations where multiple pickup points or process lines must connect to a common main line. Selection depends on the main tubing diameter, branch diameter, material, gauge and required end configuration.
Standard 45° YL Specifications
2″ through 4″ O.D. — 16 Gauge
5″ through 8″ O.D. — 14 Gauge
10″ through 14″ O.D. — 12 Gauge
Materials: Carbon Steel, Galvanized Steel, Aluminum 6061 and 304 Stainless Steel.
Expanded Ends: Expanded ends are standard through 6″. Straight ends are available on all sizes.
D: 1-3/8″ through 4″ O.D.; 1-5/8″ for 5″ and 6″ O.D.
E: Inside Diameter (I.D.) = A
G: Inside Diameter (I.D.) = F
L: 1-3/8″ through 4″ O.D.; 1-5/8″ for 5″ and 6″ O.D.
* Segmented.
All dimensions are in inches.
| Part No. | Size | Gauge | A - O.D. | B | C | F - O.D. | H | K |
|---|---|---|---|---|---|---|---|---|
| YL-2041 | 2 | 16 | 2 | 5 | 9-1/16 | 2 | 4-9/16 | 9-1/2 |
| YL-2151 | 2-1/8 | 16 | 2-1/8 | 5 | 9-3/32 | 2-1/8 | 4-11/16 | 9-1/2 |
| YL-2551 | 2-1/2 x 2-1/8 | 16 | 2-1/2 | 5 | 9-9/32 | 2-1/8 | 4-7/8 | 10 |
| YL-2561 | 2-1/2 | 16 | 2-1/2 | 6 | 10-5/32 | 2-1/2 | 5-3/16 | 10 |
| YL-3051 | 3 x 2-1/8 | 16 | 3 | 5 | 9-17/32 | 2-1/8 | 5-1/8 | 10-1/2 |
| YL-3061 | 3 x 2-1/2 | 16 | 3 | 6 | 10-13/32 | 2-1/2 | 5-7/16 | 10-1/2 |
| YL-3071 | 3 | 16 | 3 | 7-1/2 | 11-19/32 | 3 | 5-29/32 | 11-1/2 |
| YL-3551 | 3-1/2 x 2-1/8 | 16 | 3-1/2 | 5 | 9-25/32 | 2-1/8 | 5-3/8 | 11 |
| YL-3561 | 3-1/2 x 2-1/2 | 16 | 3-1/2 | 6 | 10-21/32 | 2-1/2 | 5-11/16 | 11 |
| YL-3571 | 3-1/2 x 3 | 16 | 3-1/2 | 7-1/2 | 11-27/32 | 3 | 6-5/32 | 13 |
| YL-3581 | 3-1/2 | 16 | 3-1/2 | 8-3/4 | 12-31/32 | 3-1/2 | 6-9/16 | 13 |
| YL-4051 | 4 x 2-1/8 | 16 | 4 | 5 | 10-1/32 | 2-1/8 | 5-5/8 | 12 |
| YL-4061 | 4 x 2-1/2 | 16 | 4 | 6 | 10-29/32 | 2-1/2 | 5-15/16 | 12 |
| YL-4071 | 4 x 3 | 16 | 4 | 7-1/2 | 12-3/32 | 3 | 6-13/32 | 12 |
| YL-4081 | 4 x 3-1/2 | 16 | 4 | 8-3/4 | 13-7/32 | 3-1/2 | 6-13/16 | 14 |
| YL-4091 | 4 | 16 | 4 | 10 | 14-11/32 | 4 | 7-1/4 | 14 |
| YL-5051 | 5 x 2-1/8 | 14 | 5 | 5 | 10-17/32 | 2-1/8 | 6-1/8 | 13 |
| YL-5061 | 5 x 2-1/2 | 14 | 5 | 6 | 11-13/32 | 2-1/2 | 6-7/16 | 13 |
| YL-5071 | 5 x 3 | 14 | 5 | 7-1/2 | 12-19/32 | 3 | 6-29/32 | 15-1/2 |
| YL-5081 | 5 x 3-1/2 | 14 | 5 | 8-3/4 | 13-23/32 | 3-1/2 | 7-5/16 | 15-1/2 |
| YL-5091 | 5 x 4 | 14 | 5 | 10 | 14-27/32 | 4 | 7-3/4 | 15-1/2 |
| YL-5151 | 5 | 14 | 5 | 12-1/2 | 17-9/16 | 5 | 9 | 18-1/2 |
| YL-6051 | 6 x 2-1/8 | 14 | 6 | 5 | 11-1/32 | 2-1/8 | 6-5/8 | 15 |
| YL-6061 | 6 x 2-1/2 | 14 | 6 | 6 | 11-29/32 | 2-1/2 | 6-15/16 | 15 |
| YL-6071 | 6 x 3 | 14 | 6 | 7-1/2 | 13-3/32 | 3 | 7-13/32 | 15 |
| YL-6081 | 6 x 3-1/2 | 14 | 6 | 8-3/4 | 14-7/32 | 3-1/2 | 7-13/16 | 17 |
| YL-6091 | 6 x 4 | 14 | 6 | 10 | 15-11/32 | 4 | 8-1/4 | 17 |
| YL-6141 | 6 x 5 | 14 | 6 | 12-1/2 | 18-1/16 | 5 | 9-1/2 | 21 |
| YL-6151 | 6 | 14 | 6 | 15 | 20-25/32 | 6 | 10-25/32 | 21 |
| YL-8051 | 8 x 2-1/8 | 14 | 8 | 5 | 12-1/32 | 2-1/8 | 7-5/8 | 18 |
| YL-8061 | 8 x 2-1/2 | 14 | 8 | 6 | 12-29/32 | 2-1/2 | 7-15/16 | 18 |
| YL-8071 | 8 x 3 | 14 | 8 | 7-1/2 | 14-3/32 | 3 | 8-13/32 | 18 |
| YL-8081 | 8 x 3-1/2 | 14 | 8 | 8-3/4 | 15-7/32 | 3-1/2 | 8-13/16 | 21 |
| YL-8091 | 8 x 4 | 14 | 8 | 10 | 16-11/32 | 4 | 9-1/4 | 21 |
| YL-8141 | 8 x 5 | 14 | 8 | 12-1/2 | 19-1/16 | 5 | 10-1/2 | 24 |
| YL-8151 | 8 x 6 | 14 | 8 | 15 | 21-25/32 | 6 | 11-25/32 | 24 |
| YL-8161 | 8 | 14 | 8 | 20 | 27 | 8 | 14-5/32 | 29 |
| YL-10051 | 10 x 2-1/8 | 12 | 10 | 5 | 13-1/32 | 2-1/8 | 8-5/8 | 21 |
| YL-10061 | 10 x 2-1/2 | 12 | 10 | 6 | 13-29/32 | 2-1/2 | 8-15/16 | 21 |
| YL-10071 | 10 x 3 | 12 | 10 | 7-1/2 | 15-3/32 | 3 | 9-13/32 | 21 |
| YL-10081 | 10 x 3-1/2 | 12 | 10 | 8-3/4 | 16-7/32 | 3-1/2 | 9-13/16 | 24 |
| YL-10091 | 10 x 4 | 12 | 10 | 10 | 17-11/32 | 4 | 10-1/4 | 24 |
| YL-10141 | 10 x 5 | 12 | 10 | 12-1/2 | 20-1/16 | 5 | 11-1/2 | 24 |
| YL-10151 | 10 x 6 | 12 | 10 | 15 | 22-3/4 | 6 | 12-25/32 | 28 |
| YL-10161 | 10 x 8 | 12 | 10 | 20 | 28 | 8 | 15-5/32 | 32 |
| YL-10171 | 10 | 12 | 10 | 32 | 34-11/16 | 10 | 18-5/8 | 36 |
| YL-12051 | 12 x 2-1/8 | 12 | 12 | 5 | 14-1/32 | 2-1/8 | 9-5/8 | 24 |
| YL-12061 | 12 x 2-1/2 | 12 | 12 | 6 | 14-29/32 | 2-1/2 | 9-31/32 | 24 |
| YL-12071 | 12 x 3 | 12 | 12 | 7-1/2 | 16-3/32 | 3 | 10-13/32 | 24 |
| YL-12081 | 12 x 3-1/2 | 12 | 12 | 8-3/4 | 17-7/32 | 3-1/2 | 10-13/16 | 27 |
| YL-12091 | 12 x 4 | 12 | 12 | 10 | 18-11/32 | 4 | 11-1/4 | 27 |
| YL-12141 | 12 x 5 | 12 | 12 | 12-1/2 | 21-1/16 | 5 | 12-1/2 | 27 |
| YL-12151 | 12 x 6 | 12 | 12 | 15 | 23-3/4 | 6 | 13-25/32 | 31 |
| YL-12161 | 12 x 8 | 12 | 12 | 20 | 29 | 8 | 16-5/32 | 35 |
| YL-12171 | 12 x 10 | 12 | 12 | 32 | 35-11/16 | 10 | 19-5/8 | 39 |
| YL-12181 | 12 | 12 | 12 | 36* | 40-3/4 | 12 | 21-27/32 | 43 |
| YL-14161 | 14 x 8 | 12 | 14 | 20 | 30 | 8 | 17-5/32 | 38 |
| YL-14171 | 14 x 10 | 12 | 14 | 32 | 36-11/32 | 10 | 20-5/8 | 42 |
| YL-14181 | 14 x 12 | 12 | 14 | 36* | 41-3/4 | 12 | 22-27/32 | 46 |
| YL-14191 | 14 | 12 | 14 | 36* | 45-15/16 | 14 | 24-13/32 | 52 |
Standard 45° YL Specifications
2" through 4" O.D. — 16 Gauge
5" through 8" O.D. — 14 Gauge
10" through 14" O.D. — 12 Gauge
11 Gauge available with straight ends only.
Materials: Carbon Steel, Galvanized Steel, Aluminum and Stainless Steel.
End Configurations: Expanded ends are standard through 6" size. Straight ends are available on all sizes by request. Straight and expanded-end combinations are also available.
D: Expansion depth — 1-3/8" through 4" O.D.; 1-5/8" for 5" and 6" O.D.
A: Outside Diameter (O.D.) = E Inside Diameter (I.D.)
F: Outside Diameter (O.D.) = G Inside Diameter (I.D.)
L: Expansion depth — 1-3/8" through 4" O.D.; 1-5/8" for 5" and 6" O.D.
* Segmented.
All reference dimensions are nominal and shown in inches.
Standard 90° TY branch fittings are used throughout central vacuum, pneumatic conveying, dust collection and material handling systems to connect a branch line to a main tubing run. The TY configuration provides a controlled directional transition while supporting efficient airflow and material movement through the piping network.
Standard 45° YL fittings connect multiple pickup points and branch lines to a common main line in central vacuum systems. Proper TY sizing helps maintain balanced airflow throughout the piping network.
45° YL branch fittings are used in pneumatic conveying systems to introduce or combine material flow between branch lines and main tubing runs. Smooth branch geometry helps support reliable movement of powders, pellets and other dry bulk materials.
Standard YL fittings connect multiple dust pickup points to shared collection piping. They are commonly used to route airflow from machinery and work areas into a central dust collection system.
45° YL fittings are used in dry material handling systems to route conveyed product between branch lines and main tubing. Fitting size, material and gauge should match the conveyed material and system requirements.
Durable carbon steel YL fittings are used in central vacuum, dust collection, pneumatic conveying and material handling systems where strong branch connections are required.
Galvanized steel YL fittings provide added corrosion protection for industrial vacuum and conveying systems while connecting branch lines to main tubing runs.
Lightweight aluminum YL fittings help reduce installation weight while providing smooth branch transitions in industrial vacuum and pneumatic conveying systems.
Standard 45° YL fittings are available in multiple main-line and branch diameters, gauges and materials. Availability varies by size and material, with standard, expanded or custom end configurations available for different industrial vacuum and pneumatic conveying system requirements.
Industrial vacuum TY branch fittings are available in multiple main-line and branch diameters, gauges, materials and configurations. Availability varies by TY fitting size with standard, expanded or custom end configurations available for different system requirements.
Selecting the right Standard 45° YL fitting depends on the main tubing diameter, branch diameter, airflow or material flow requirements and the connection method used throughout the system.
Match the main-line and branch diameters to the tubing sizes being connected. Proper sizing helps maintain fit, alignment and consistent system performance through the YL connection.
The YL branch geometry affects airflow and conveyed material movement. Proper sizing and orientation help support efficient flow while minimizing unnecessary turbulence and material impact.
Consider where the YL fitting will be installed and how the branch line must connect to the main tubing run. The fitting should provide proper clearance and alignment with surrounding equipment and piping.
Select a YL fitting that is compatible with the system joining method, including compression couplings, slip couplings, shrink sleeves, expanded-end connections or other compatible configurations.
Industrial vacuum tubing provides the main piping runs used to connect branch fittings, elbows, reducers, adapters and other components throughout vacuum and pneumatic conveying systems.
Industrial vacuum elbows and bends change piping direction while connecting with branch fittings to route airflow and conveyed material through central vacuum, dust collection and pneumatic conveying systems.
Industrial vacuum reducers transition between different tubing diameters and can be used with YL fittings where the main line and branch connection require different sizes.
Male and female adapters connect industrial vacuum tubing and branch fittings to threaded pipe, equipment ports and other system components.
Compression couplings provide secure connections between vacuum tubing, branch fittings and other system components while allowing sections to be installed or serviced without permanent welding.
A Standard 45° YL fitting is an industrial vacuum branch fitting used to connect a branch line to a main tubing run at a 45-degree configuration. It is commonly used in central vacuum, dust collection and pneumatic conveying systems.
Standard 45° YL fittings are commonly available in carbon steel, galvanized steel, aluminum and 304 stainless steel. Material availability varies by tubing diameter, gauge and end configuration.
Standard 45° YL fittings are available in multiple main-line and branch diameter combinations. Available sizes vary by material, gauge and fitting configuration.
Choose a YL fitting based on the main tubing diameter, branch diameter, material, gauge, system layout and connection method. Proper sizing helps maintain fit, alignment and efficient system performance.
Yes. Standard 45° YL fittings are commonly used in pneumatic conveying systems to connect branch lines to main tubing runs while supporting the movement of powders, pellets and other dry bulk materials.
Standard 45° YL fittings can be connected using compression couplings, slip couplings, shrink sleeves, expanded-end connections and other compatible joining methods depending on the tubing size and system requirements.
Provide the main tubing diameter, branch diameter, material, gauge and connection requirements, and we can help identify the correct Standard 45° YL fitting for your system.