Overpressure relief valve for first-stage scuba regulators. Fits a standard 3/8-24 UNF low-pressure port and helps protect hoses and downstream components by venting excess intermediate pressure.

• Thread: 3/8-24 UNF (low-pressure port)
• Application: First-stage overpressure relief
• Installs in an unused low-pressure port

Verify compatibility with your regulator. Professional installation and regular inspection are recommended.