Product features
- Straight reducing union
- Paired D1 and D2 tube sizes
- Separate metric and inch combinations
EOAT & Factory Automation ComponentsSelection · Sourcing · RFQ Support
Pneumatics
APG Reducing Straight Union Fittings
APG reducing unions connect two different tube outside diameters in a straight line. Choose a listed D1 and D2 size pair rather than combining sizes independently.
Series
APG
Listed models
15
Configuration
Push-in connection
Selection
Catalog order codes
Model, PN and application context confirmed during inquiry.
Overview
Understand the APG product family
APG reducing unions connect two different tube outside diameters in a straight line. Choose a listed D1 and D2 size pair rather than combining sizes independently.
Selection approach
Specify the larger and smaller tube outside diameters as the listed D1/D2 pair. Confirm the corresponding length and connection drawing.
All values shown below are traceable to the reviewed Catalog source. Missing information is not inferred.
Applications
Pneumatic tube connectionsAir-line routingVacuum-line connections
Product Selection Tool
Compare APG Models
Specify the larger and smaller tube outside diameters as the listed D1/D2 pair. Confirm the corresponding length and connection drawing.
| Model | PN | D1 | D2 | A | X1 | X2 | Status |
|---|---|---|---|---|---|---|---|
| APG06-04 | Confirm by material / quotation | 6 mm | 4 mm | 34.9 | 11.9 | 9.9 | Confirmed |
| APG08-04 | Confirm by material / quotation | 8 mm | 4 mm | 38.1 | 13.9 | 9.9 | Confirmed |
| APG08-06 | Confirm by material / quotation | 8 mm | 6 mm | 38.8 | 13.9 | 11.9 | Confirmed |
| APG10-06 | Confirm by material / quotation | 10 mm | 6 mm | 47 | 16.9 | 11.9 | Confirmed |
| APG10-08 | Confirm by material / quotation | 10 mm | 8 mm | 47.3 | 16.9 | 13.9 | Confirmed |
| APG12-10 | Confirm by material / quotation | 12 mm | 10 mm | 48.7 | 19.9 | 16.9 | Confirmed |
| APG14-12 | Confirm by material / quotation | 14 mm | 12 mm | 48.3 | 21.8 | 19.9 | Confirmed |
| APG16-12 | Confirm by material / quotation | 16 mm | 12 mm | 49.6 | 23.9 | 19.9 | Confirmed |
| APG16-14 | Confirm by material / quotation | 16 mm | 14 mm | 50.2 | 23.9 | 21.8 | Confirmed |
| APG1/4-5/32 | Confirm by material / quotation | 1/4 in | 5/32 in | 34.9 | 11.9 | 9.9 | Confirmed |
| APG5/16-5/32 | Confirm by material / quotation | 5/16 in | 5/32 in | 38.4 | 13.9 | 9.9 | Confirmed |
| APG5/16-1/4 | Confirm by material / quotation | 5/16 in | 1/4 in | 38.4 | 13.9 | 11.9 | Confirmed |
| APG3/8-1/4 | Confirm by material / quotation | 3/8 in | 1/4 in | 47.8 | 16.9 | 11.9 | Confirmed |
| APG3/8-5/16 | Confirm by material / quotation | 3/8 in | 5/16 in | 47.8 | 16.9 | 13.9 | Confirmed |
| APG1/2-3/8 | Confirm by material / quotation | 1/2 in | 3/8 in | 49.4 | 19.9 | 16.9 | Confirmed |
Continue to Engineering Reference to verify drawings, dimensions and technical notes before quotation.
Engineering Reference
Technical Data & Dimensions
Review the engineering sheets for the selected model. Confirm dimensions, connections and the applicable configuration before quotation.
Dimensions & Drawings
Model / PN Reference
Technical Notes
Applicability
Pneumatic Fittings 2025, printed page 17: APG06-04, APG08-04, APG08-06, APG10-06, APG10-08, APG12-10, APG14-12, APG16-12, APG16-14, APG1/4-5/32, APG5/16-5/32, APG5/16-1/4, APG3/8-1/4, APG3/8-5/16, APG1/2-3/8
Pneumatic Fittings 2025, printed page 01: APG06-04, APG08-04, APG08-06, APG10-06, APG10-08, APG12-10, APG14-12, APG16-12, APG16-14, APG1/4-5/32, APG5/16-5/32, APG5/16-1/4, APG3/8-1/4, APG3/8-5/16, APG1/2-3/8
Technical specifications
| Fluid | Air and vacuum |
|---|---|
| Operating pressure | 0–1.0 MPa |
| Negative pressure | -100 kPa |
| Catalog maximum pressure | 1.5 MPa; separate from the operating range, not a burst-pressure rating |
| Operating temperature | 0–60°C |
| Applicable tube | Polyurethane and nylon |
| Materials reference | The family structure drawing identifies PBT, brass, NBR, POM, zinc and SUS at individual components; use the drawing for component locations. |
APG — Models & Engineering Reference
Listed models, selection data and applicable dimensional reference. · Pneumatic Fittings 2025, printed page 17
High-resolution web preview · Pneumatic Fittings 2025, printed page 17
Plastic Push-in Fittings — Operating Conditions & Structure
Common family reference; apply the product-specific notes and model tables. · Pneumatic Fittings 2025, printed page 01
High-resolution web preview · Pneumatic Fittings 2025, printed page 01
Technical confirmation notes
- Operating pressure and the catalog maximum pressure are separate values. Choose tubing and connections for the actual operating conditions.
- Tube outside diameters are marked in mm or inches. Interpret the remaining dimension symbols using the engineering drawing; an inch tube size does not make every drawing dimension an inch value.
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