Cannot find push-to-connect shutoff valves that fit 1/2" OD copper pipe (3/8" CTS) for a basement bathroom plumbing project.

Standard push-to-connect fittings are labeled for nominal 1/2" pipe but actually fit 5/8" OD, not the 1/2" OD (3/8" CTS) copper pipe common in older homes.

Severity

3Medium

Willingness to Pay

implied

Added

Jun 11, 2026

Workarounds Described

searches online for correct fittings by trial and error
compares OD measurements manually against product descriptions

Implied Software Gaps

fitting size lookup tool that matches actual pipe OD to correct product SKU

App Concept

CopperFit Finder

An app that helps DIYers and plumbers identify the exact fitting size needed by measuring pipe OD with a photo or input. It cross-references standard and CTS sizes, then shows compatible push-to-connect fittings and where to buy them instantly.

Key Features

Photo-based pipe OD measurement using phone camera
Database of all push-to-connect fittings by brand (SharkBite, ProPEX, etc.) and actual OD compatibility
Filter by pipe type: copper, PEX, CPVC, CTS
Locate nearest store or online retailer with stock

Target Users: DIY homeowners and plumbers struggling to match old copper pipe sizes with modern push-to-connect fittings.

Revenue Model: Free basic lookup; $2.99 per month for advanced features like project save, AI sizing, and store price comparisons.

Existing Solutions Mentioned

push to connect shutoff valves for 1/2 inch pipe (standard 5/8" OD)

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