Yes, DWV (Drain, Waste, and Vent) PVC fittings are typically manufactured to Schedule 40 (SCH40) specifications. However, there are some key differences between standard Schedule 40 pressure-rated PVC fittings and DWV fittings:
1. Purpose
- DWV fittings are specifically designed for non-pressurized applications like drain, waste, and vent systems.
- Standard SCH40 fittings are designed for pressurized water systems.
2. Standards and Certification
- DWV fittings conform to standards like ASTM D2665 and ASTM D3311, which are specific to drainage systems.
- Pressure-rated SCH40 fittings meet standards such as ASTM D1785 for pipe and ASTM D2466 for fittings.
3. Markings
- DWV fittings are often marked with “DWV” to indicate they are not rated for pressure use.
- Regular SCH40 pressure fittings do not include this marking and are rated for handling high pressure.
4. Design and Configuration
- DWV fittings are optimized for smooth drainage with features like longer sweeps and angled connections.
- Pressure SCH40 fittings focus on robust construction to handle pressure.
5. Material Overlap
Both DWV and SCH40 fittings are often made from the same type of PVC material, ensuring durability and resistance to corrosion and chemicals. However, DWV fittings emphasize gravity-based flow rather than pressure containment.
When using PVC fittings, ensure you select the appropriate type for your application. For drainage, DWV is ideal; for pressurized systems, opt for pressure-rated SCH40 fittings. At 247Garden, we offer a range of both options to meet your plumbing needs!