Answer
Nov 18, 2025 - 11:21 AM
Inlet connection type and size must match your cylinder or supply system to ensure leak-free and safe operation. Common standards include CGA 540, CGA 590, and NPT fittings. For instance, the Harris 330-125-540 uses CGA 540, while the Harris 447NC-200 features a 1/4" NPT inlet for pipeline systems. This variety means you can find a regulator compatible with your existing equipment, making installation straightforward and reliable.
