NDS 3P12 PVC increaser reducer adapter illustrating 3-to-4 inch transition for DWV systems
NDS PVC adapter enabling hub-to-hub solvent-weld connection for leak-free drainage
NDS 3in to 4in transition supports DWV and S&D piping networks
NDS solvent-weld compatible PVC adapter for watertight drain connections
NDS adapter compatible with channel drains, grates, and pop-up emitters
NDS PVC coupling for S&D and DWV pipe transitions
NDS white PVC increaser reducer adapter for residential drainage

NDS

NDS 3P12 PVC Increaser/Reducer Adapter — 3-to-4-Inch DWV/S&D Hub Connection (White)

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$9.83

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Why customers choose PatioZora Garden

Overview

The NDS 3P12 PVC Increaser/Reducer Adapter is a compact, reliable transitional piece designed for non-pressurized drainage systems. It enables a 3-inch DWV or SCH40 hub to connect to a 4-inch Sewer & Drain (S&D) hub, helping water flow smoothly toward downstream pipes with a clean, joined seam.

Key benefits

  • Transitional compatibility: bridges 3-in to 4-in connections across DWV/SCH40 and S&D piping networks.
  • Watertight performance: hub-to-hub solvent-weld options provide a sealed joint and reduced leakage risk.
  • Broad component compatibility: pairs with channel drains, drainage grates, and pop-up emitters within a complete drainage plan.
  • Standards-aligned design: crafted for Sewer & Drain and DWV Schedule 40 piping per applicable ASTM specs (D2729, D3034, D2751, and D2665).

Common applications

  • Residential drainage projects in basements or crawl spaces needing a 3-inch line to connect to a 4-inch main.
  • Outdoor drainage runs requiring a formal size transition without bulky reducers.
  • Systems that incorporate channel drains or pop-up emitters and require reliable hub connections.

Made from durable PVC, the 3P12 adapter supports hub-to-hub solvent-weld installations, offering a neat, dependable path for water flow. While it enhances layout flexibility, users should confirm proper slope and venting per local codes to achieve optimal drainage performance. This product is intended for non-pressurized drainage and sewer systems and is not a substitute for venting or other essential plumbing practices.

FAQ

Q: What pipe sizes does the NDS 3P12 adapter connect?

A: It connects 3-inch DWV/SCH40 hub pipes to 4-inch S&D hub pipes for non-pressurized drainage.

Q: Can this adapter be used with channel drains or pop-up emitters?

A: Yes, it supports hub connections in compatible drainage layouts including channel drains and pop-up emitters.

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