Tigre
SDR26 Gasketed Concentric Increaser Coupling - Gasket x Gasket
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
SDR26 Gasketed Concentric Increaser Coupling - Gasket x Gasket
The SDR26 Gasketed Concentric Increaser Coupling - Gasket x Gasket connects compatible SDR26 PVC pipes of different nominal diameters in a straight piping run. Its concentric configuration keeps the centerlines of the two pipe connections aligned while transitioning between pipe sizes.
Manufactured by Tigre DuraPlastic, these increaser couplings feature gasketed connections at both ends and are available in 6" x 4", 8" x 4", and 8" x 6" nominal sizes. Designed for compatible SDR26 sewer and drainage piping systems, the fittings are part of Tigre's gasketed PVC product family manufactured to applicable ASTM and CSA specifications.
Product Highlights
- SDR26 gasketed concentric increaser coupling
- Gasket x Gasket (GxG) connection configuration
- Two gasketed connection openings
- Connects compatible pipes of different nominal sizes
- Concentric design maintains aligned pipe centerlines
- Designed for compatible SDR26 sewer and drainage piping systems
- Available in 6" x 4", 8" x 4", and 8" x 6" sizes
- Injection-molded PVC construction
- Virgin PVC compound
- PVC cell classification 12454 or 13343
- PVC material certified to ASTM D1784
- Manufactured to ASTM D3034, ASTM F1336, and CSA B182.2, as applicable
- Gaskets manufactured to ASTM F477 or ASTM F913
- Gasketed joints comply with ASTM D3212
- NSF third-party certification to applicable specifications
- Made in the USA
Available Sizes & Part Numbers
Each concentric increaser coupling features two gasketed connections. Select the size combination that matches the pipe diameters required for the installation.
| Nominal Size | Connection Types | Part Number | SKU | Weight |
|---|---|---|---|---|
| 6" x 4" | Gasket x Gasket | 37-1022 | 300003407 | 5.456 lb |
| 8" x 4" | Gasket x Gasket | 37-55 | 300003439 | 7.975 lb |
| 8" x 6" | Gasket x Gasket | 37-59 | 300003448 | 4.800 lb |
Technical Specifications
| Brand | Tigre DuraPlastic |
|---|---|
| Product Type | SDR26 Gasketed Concentric Increaser Coupling |
| Product Family | SDR26 Gasketed Fittings |
| Fitting Configuration | Concentric Increaser Coupling |
| Connection Configuration | Gasket x Gasket (GxG) |
| Number of Connections | Two |
| Available Nominal Sizes | 6" x 4"; 8" x 4"; 8" x 6" |
| Manufacturer Part Numbers | 37-1022, 37-55, 37-59 |
| SDR Classification | SDR26 |
| Construction | Injection Molded |
| Material | Virgin PVC Compound |
| PVC Cell Classification | 12454 or 13343 |
| PVC Material Standard | ASTM D1784 |
| Manufacturing Standards | ASTM D3034, ASTM F1336, CSA B182.2, as applicable |
| Gasket Standards | ASTM F477 or ASTM F913 |
| Gasketed Joint Standard | ASTM D3212 |
| Gasketed Joint Testing | Internal pressure (exfiltration) and vacuum (infiltration), including gasketed joint misalignment and 5% top-load deflection |
| Certification | Third-party NSF tested, certified, and listed to applicable ASTM and CSA specifications |
| Country of Manufacture | USA |
Manufacturer Technical Drawing Dimensions
The measurements below correspond to dimensions A and B in the manufacturer's SDR26 concentric increaser coupling drawing. All dimensions are in inches.
| Part Number | Nominal Size | A | B |
|---|---|---|---|
| 37-1022 | 6" x 4" | 7.38" | 1.24" |
| 37-55 | 8" x 4" | 9.58" | 2.41" |
| 37-59 | 8" x 6" | 9.58" | 2.09" |
A and B identify the measurement locations shown on Tigre's concentric increaser coupling drawing. Refer to the Technical Drawings PDF for the corresponding diagram and fitting geometry.
Product Details
Concentric Pipe Transition
Connects different nominal pipe diameters while keeping the connection centerlines aligned.
Two Gasketed Connections
Features a gasketed opening at each end for compatible SDR26 piping connections.
Three Size Combinations
Available in 6" x 4", 8" x 4", and 8" x 6" nominal configurations.
Virgin PVC Construction
Injection molded from virgin PVC compound with cell classification 12454 or 13343, certified to ASTM D1784.
Gasket Joint Performance
Gasketed joints comply with ASTM D3212 internal-pressure and vacuum testing requirements, including specified misalignment and deflection conditions.
Firmly Seated Gaskets
Gaskets are firmly seated to help prevent dislocation or misalignment during system assembly.
Product Resources & Support
Review Tigre SDR26 gasketed fitting specifications, manufacturer technical drawings, and the complete product catalog. Contact GetPipe.com for assistance selecting the correct concentric increaser coupling.
Frequently Asked Questions
What is an SDR26 gasketed concentric increaser coupling?
It is a fitting designed to connect two compatible SDR26 pipes of different nominal diameters while maintaining aligned centerlines.
What does GxG mean?
GxG means Gasket x Gasket. Both connection openings are gasketed.
What does concentric mean?
Concentric describes a fitting whose smaller and larger connection openings share a common centerline.
What sizes are available?
Available nominal size combinations are 6" x 4", 8" x 4", and 8" x 6".
Can this fitting be used as a reducer?
The fitting connects compatible pipes of two different nominal sizes. Confirm the required system configuration and installation requirements before selecting it.
Are these fittings injection molded?
Yes. Tigre specifies injection-molded construction for SDR26 gasketed fittings from 4" through 12".
What standards apply to the gaskets?
Gaskets are manufactured to ASTM F477 or ASTM F913. Gasketed joints comply with ASTM D3212.
Where can I find fitting dimensions?
See the manufacturer dimensions table above and the Technical Drawings PDF in the Product Resources & Support section.
Are these fittings NSF certified?
Tigre specifies third-party NSF testing, certification, and listing to applicable ASTM and CSA requirements.
Can these fittings be used with compressed air or gases?
No. Do not use these fittings with compressed air or gases. Do not test PVC piping systems using compressed air or gases.
Important Ordering & Safety Notes
Ordering: Verify both nominal pipe sizes before selecting an increaser coupling.
Concentric Configuration: This fitting maintains aligned connection centerlines. Confirm that a concentric transition is appropriate for the installation.
Connection Compatibility: Both connections are gasketed. Confirm compatibility with the intended SDR26 piping system.
Gasket Installation: Ensure that gaskets remain firmly seated during assembly to prevent dislocation or misalignment.
Compressed Air and Gases: Do not use these fittings for compressed air or gases. Do not test PVC piping systems using compressed air or gases.
Fluid Compatibility: Do not use these fittings with liquids not recommended by Tigre.
Warranty: Modification of fittings voids the manufacturer's warranty. Specifications are subject to change without notice.
