Overview
The Western 603-A CGA-660 nipple is a precision-engineered brass regulator inlet fitting designed for refrigerant gas service. Built by Western Enterprises—a trusted manufacturer of gas control components—this nipple provides fast and semi-permanent connections in regulator inlets, manifold systems, and related gas delivery equipment.
Key Features
- Brass construction for superior durability and corrosion resistance
- Rated to 3000 PSIG for demanding refrigeration and gas service applications
- 1/4″ NPT thread for standard regulator inlet compatibility
- 2 1/4″ length accommodates various mounting configurations
- CGA-660 compliance ensures safe, standardized refrigerant gas connections
- Made in the USA
Technical Specifications
| CGA Standard | CGA-660 |
| Gas Service | Refrigerant Gases |
| Pressure Rating | 3000 PSIG |
| Material | Brass |
| Thread Size | 1/4 in (NPT) |
| Length | 2 1/4 in |
| Thread Type | Right Hand (RH) |
| Manufacturer | Western Enterprises |
| Country of Origin | United States |
Typical Applications
- Refrigeration equipment regulator inlet connections
- Air conditioning system manifold assemblies
- Industrial gas cylinder regulator fittings
- Pigtail and tee connection manifolds
- Backup gas supply systems requiring safety redundancy
Compatibility & Replacements
Compatible With
- CGA-660 regulated refrigerant gas cylinders and bottles
- Regulator inlet systems accepting 1/4″ NPT connections
- Western manifold blocks and pigtail assemblies
- Standard refrigeration and air conditioning equipment
Replaces / Drop-In Replacement For
- Western 603 (1 3/4″ length variant)
- OEM regulator inlet nipples requiring CGA-660 / 1/4″ NPT specifications
Works With
- Western Enterprises regulator components and manifold kits
- CGA-660 cylinder connections (refrigerant service)
- Standard NPT-threaded regulator inlet ports
