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Plumbing, Electrical, or other field servicePlumbing, Electrical, or other field service2MildPlumber$ implied

Moving a toilet requires creating a precise 2% slope on the waste drain pipe, but no standard coupling provides that slope, forcing manual height adjustment.

Standard couplings are straight and do not incorporate a slope, so achieving precise grade requires extra manual work like cutting and shimming.

Severity

2Mild

Willingness to Pay

implied

Added

Apr 27, 2026

Workarounds Described

uses a straight coupling and manually creates slope by cutting and shimming the pipe

App Concept

GradeLock Coupling

A pre-sloped pipe coupling that automatically provides a 2% grade when connecting horizontal drain runs. Saves plumbers time and ensures code-compliant slope without manual calculation.

Key Features

Pre-set 2% slope integrated into coupling
Compatible with 3-inch and 4-inch DWV pipes
Built-in level indicator for easy installation
Fits standard hub and spigot connections

Target Users: Plumbers and pipe fitters in residential and commercial plumbing installations

Revenue Model: $8-$15 per coupling, sold through plumbing supply distributors

Existing Solutions Mentioned

coupling

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