Overview
The Western Enterprises SS-604 is a stainless steel hand-tight regulator inlet nut engineered for CGA-660 refrigerant gas connections. Manufactured by Western/Scott Fetzer, this component is machined to exacting CGA specifications and designed to provide a secure, leak-tight seal in HVAC service applications. The stainless steel construction ensures superior corrosion resistance in demanding environmental conditions.
Key Features
- Stainless steel construction for corrosion resistance and durability
- Machined to CGA-660 specifications for precise fit and compatibility
- Hand-tight design for easy installation without special tools
- Accommodates full range of refrigerant gas service requirements
- Female connection type (1.035″-14 NGO RH thread)
- Wrench flats machined for additional wrench-tight applications
Technical Specifications
The SS-604 inlet nut meets industry standards for gas distribution components and offers the following technical parameters:
- Material: Stainless Steel
- CGA Standard: CGA-660
- Thread Size: 1.035″-14 NGO (National Gas Outlet)
- Thread Direction: Right-hand (RH)
- Connection: Female inlet
- Weight: 0.12 lb
- Gas Type: Refrigerant gases
- Country of Origin: China
Typical Applications
The Western Enterprises SS-604 is commonly used in:
- HVAC/R (heating, ventilation, air conditioning, refrigeration) systems and servicing
- Refrigerant recovery and recycling equipment
- Industrial refrigeration installations and maintenance
- Gas regulator inlet connections in commercial and residential AC systems
- Laboratory and diagnostic gas distribution systems using CGA-660 outlets
Compatibility & Replacements
Compatible With
- CGA-660 regulator outlets and inlet connections
- R-22, R-134a, R-410A, and other standard refrigerant gases
- All female 1.035″-14 NGO threaded refrigerant system components
- Standard HVAC/R service tools and recovery equipment
Replaces / Drop-In Replacement For
- Western Enterprises 604 (brass version) — SS-604 stainless steel upgrade
- Equivalent CGA-660 inlet nuts from other manufacturers with matching thread specifications
Works With
- Soft-tip and O-ring type CGA-660 nipples
- Standard refrigerant regulators and hoses rated for CGA-660 connections
- HVAC diagnostic and service equipment with CGA-660 inlet ports
- Industrial gas distribution systems using National Gas Outlet threads
