1.5" Waterless Trap Seal

Name: GD15 - 1.5" Waterless Trap Seal
Brand: Green Drain
SKU: GD15

Fits 1.5" (39-47 mm) drain outlets. Drop-in install, no tools required.

€31,95

Excl. VAT. Ships from our EU warehouse in Denmark.

Pipe Size 1.5" (39-47mm)

Flow Rate 51.55 L/min

Install Time 30 Seconds

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cUPC Listed

ASSE 1072 Compliant

Ships from Denmark

Inspect the seal around 6 to 12 months in service to confirm the silicone is still intact and sealing properly. Replace only as needed: high-use drains wear sooner, while low-use drains often last a year or longer.

Cutaway view of a 1.5-inch drain and its trap

How it works.

Green Drain is a one-way valve for your drain. Water flows down and out. Nothing comes back up.

Inside sits a soft silicone valve. Running water pushes it open; the moment the water stops, it closes and seals tight against sewer gas, odors, and pests. Because it seals with silicone instead of water, it never dries out the way an ordinary trap can, even when the drain goes weeks without use.

It fits 1.5-inch drains and drops in by hand. No tools, no plumber, installed in seconds.

Installs in 30 seconds. No tools.

Step 1: the strainer lifted off a shower drain, shown in section

Lift the strainer

Most strainers lift straight out by hand. Some are held by one center screw; back it out, then lift.

Step 2: measuring the pipe opening at the bottom of the drain, inside wall to inside wall

Measure the opening

Measure the pipe opening under the strainer, inside wall to inside wall. The GD15 fits 39 to 47 mm (1.5 in.).

Step 3: the GD15 being pressed down into the pipe opening

Press gently to seat

Recess 2 to 4 inches below the pipe top. The silicone gasket creates a snug seal against the pipe walls.

Step 4: the strainer back in place over the seated GD15

Replace the strainer

Put the strainer back. Done. Fully sealed in under a minute.

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Technical Specifications

Model	GD15
Pipe Size	1.5" (39-47 mm)
Height	30 mm
Housing Diameter (no gasket)	36.46 mm (1.435")
Housing with Gasket	48.77 mm (1.920") wide x 30.18 mm (1.188")
Housing Material	ABS Plastic
Valve Material	Silicone Rubber
Seal Material	Silicone Gasket
Flow Rate	51.55 L/min
WaterMark License	WM-022837 (DN40)
Patents	Multiple US & international patents

Industries we serve.

The GD15 fits anywhere a 1.5" (39-47 mm) drain connection is present.

Residential Hotels & Hospitality Property Management Commercial Properties

Certifications and compliance.

Green Drain holds six product certifications (cUPC, WaterMark, NSF/ANSI 2, CE / ETA-18/0536, Saber, and HACCP International). The remaining items below are independent test reports and compliance declarations that support those listings.