DrainDockMulti-Port Drain Adapter

Applications Not Requiring Air Gaps

The patented DrainDock® Multi-Port Drain Adapter accepts multiple drain connections in one small hub—saving space, cost and time. DrainDock is easy to install, and its 1/2" FNPT injection-molded ports accept up to eight drain connections in one small hub.

Materials & Dimensions

  • 100% lead-free
  • 1/2" female NPT threaded inputs (2, 4 or 8)
  • Durable, non-corrosive schedule 40 PVC
  • Installs vertically almost anywhere needed
  • Top hub for 1-1/2" pipe, adapter or open
  • Bottom hub for 1-1/2" pipe, adapter or 2" coupling
  • Resists chlorine and chloramine corrosion
  • Resists hardness and scale buildup

Industries & Typical Applications

  • Residential, commercial & light industrial
  • Food service & appliance drain lines
  • Water treatment, softeners & general filters
  • Reverse osmosis & deionization systems
DrainDock Multi-Port Drain Adapter - DD152 DrainDock Multi-Port Drain Adapter - DD154 DrainDock Multi-Port Drain Adapter - DD158 DrainDock Multi-Port Drain Adapter - DD152 Case DrainDock Multi-Port Drain Adapter - DD154 Case DrainDock Multi-Port Drain Adapter - DD158 Case

Multi-Port Drain Adapter

Applications Not Requiring Air Gaps

$ 39.00 $ 468.00

Looking for compatible fittings?

DrainDock's ports are compatible with any 1/2" NPT threaded fitting. For your convenience, we offer a small selection of fittings for our most popular applications.

View Fittings

Standards Certification & Compliance

QAI Certification

QAI Listed

View PDF
  • ASME A112.18.2

    This Standard covers plumbing waste fittings of sizes NPS-2 and smaller, not including plumbing supply fittings, other devices, or flexible water connectors under continuous pressure, all of which are covered by separate Standards.

    Learn more
  • ASTM D2665

    This specification refers to the requirements and test methods associated with the virgin polyvinyl chloride (PVC) construction of plastic drain, waste, and vent pipe and fittings. Covered fittings are subjected to hydrostatic burst pressure and impact-resistance testing.

    Learn more
  • ASTM F1498

    This specification establishes requirements for dimensions and gaging of taper pipe threads used on threaded plastic pipe and fittings.

    Learn more
  • California Health & Safety Code 116875

    The California State Health and Safety Code Section 116875 requires that no person shall use any pipe, pipe or plumbing fitting or fixture, or solder or flux, that is not lead-free in the installation or repair of any public water system or any plumbing in a facility providing for human consumption except when necessary for the repair of leaded joint of cast iron pipe.

    Learn more
  • CSA B125.2

    This Canadian Standard (harmonized with ASME A112.18.2) has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

    Learn more
  • Massachusetts Acceptance P-2022-560

    In order to obtain product acceptance in Massachusetts, products must be tested using industry accepted standards to ensure they are safe and work as designed for public use. The laboratories which perform such tests must be certified to meet industry-based guidelines to ensure appropriate testing.

    Learn more
  • NSF 61

    NSF/ANSI 61 addresses the human health effects of drinking water system components. This performance-based standard evaluates the amount of contaminants that leach from the products into potable drinking water. The origin for this standard was lead reduction/ removal. Any lead that elutes into the water at over 0.25% fails this standard.

    Learn more
  • NSF 372

    NSF/ANSI 372 establishes a standardized methodology for the determination and verification of product compliance to minimize lead contaminants. This standard is consistent with the United States Safe Drinking Water Act (SDWA) and its lead-free plumbing requirements, as well as the requirements of individual U.S. states such as California.

    Learn more
  • Wisconsin Alternate Approval

    DrainDock® and DrainHub® have been reviewed and determined to comply with chapters SPS 382 through 384, Wisconsin Administrative Code, and Chapters 145 and 160, Wisconsin Statutes. The Department hereby issues an alternate approval to s. SPS 382.30(9)(c)2. based on the Wisconsin Statutes and the Wisconsin Administrative Code.

    Learn more


Models DD152 / DD154 / DD158
Material White PVC
Inputs 1/2" Female NPT (Qty 2, 4, or 8)
Diameter 4"
10.16 cm
Height 4"
10.16 cm
Weight 7.6 oz
215.5 g
Max Operating Temperature 140º F
60º C
Typical Medium Water
Vertical Orientation Yes
Continuous or Intermittent PSI Yes