Alternatives
Products that do what 3 way stop cock standard does
Standard 3 Way Stopcock Flow Valve
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Medical 3 Way Stopcock with Extension Tube - Safe
Mar 2026 · gstc.com
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2021 · github.com
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Packaging Company / Label Printing / Printing Service
30d ago · truderpackaging.com
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Hi HN, This is my attempt to fix groggy mornings by lowering my bedroom CO2 from 1700 ppm to ~900 ppm. I designed a simple, 3D-printed fan duct that directs air under the door to improve air circulation. A note on the design process: I used CadQuery, a Python library for creating parametric 3D models. I didn't know tools like this existed and highly recommend it if you can program; it turned out to be more convenient than manually iterating on prototypes in a GUI. The project is open source and the post explains the full build. Happy to answer any questions.
2025 · lepekhin.com
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2024 · hajo.me
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Hi HN, I'm developing an open-source water meter for Home Assistant and thought the HN community might be interested. I've been using some version of it after a few costly toilet leaks that my city meter missed. Recently, I decided to polish it up so others could use it. It might also function as a gas meter reader (https://youtu.be/9Dso4EBAoiE), but this is still experimental. The device runs on 3 AA batteries and utilizes an ESP32-S3. It works by measuring the spinning magnet inside the brass housing. It stays in deep sleep until it needs to transmit usage or leak…
2023 · hackaday.io
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Built for Breweries. Made for Growth.
Jun 2026 · earthrings.com
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