Tag: drain-waste-vent system

If you’re tackling a DIY plumbing project or troubleshooting a smelly drain, you might be asking: Can plumbing vent pipe have 90-degree turns? It’s a common question—especially when space is tight and straight runs aren’t possible. The short answer? Yes—but with important caveats. Getting this wrong can lead to slow drains, gurgling sounds, or even…