Western Enterprises 604 Regulator Inlet Nut CGA-660 Brass

Product Description

The WESTERN ENTERPRISES 604 is a brass regulator inlet nut designed for use with refrigerant gas regulators. It provides a secure, leak-resistant connection between the gas cylinder valve and the regulator body. The 604 conforms to the CGA-660 connection standard, with a 1.035-inch to 14 NGO right-hand female thread specification. Fabricated from brass, it offers good corrosion resistance in refrigerant service environments. This fitting is a small but critical component that ensures proper regulator seating and safe gas delivery in refrigeration and HVAC service applications.

The 604 inlet nut is intended for use with refrigerant gases in both commercial and residential HVAC service. It is a standard replacement or spare fitting used when connecting regulators to CGA-660 compatible refrigerant cylinders. HVAC technicians working with refrigerant recovery, charging, and cylinder equipment will encounter this connection type regularly. The right-hand female thread design is consistent with standard CGA-660 refrigerant cylinder valves.

Key Features

• CGA-660 connection standard for refrigerant gas service
• 1.035 inches to 14 NGO right-hand female thread
• Brass construction for corrosion resistance in refrigerant environments
• Sold individually as a discrete replacement component

Compatibility

Designed for use with CGA-660 compatible refrigerant cylinder valves and regulators rated for refrigerant gas service.

Installation Notes

Installation of regulator inlet nuts should be performed by a licensed HVAC technician familiar with refrigerant handling regulations under EPA Section 608. Always ensure the cylinder valve is fully closed and pressure is relieved from the regulator before removing or installing the inlet nut. Use an appropriately sized open-end wrench and avoid over-tightening, which can damage brass threads. Inspect threads for damage or debris before assembly to ensure a leak-free connection.

Technical Specifications

• Connection Standard: CGA-660
• Thread Specification: 1.035 inches to 14 NGO
• Thread Orientation: Right-Hand Female
• Material: Brass
• Gas Service: Refrigerant Gases
• Weight: 0.1 pounds
• Unit of Measure: Each

Standard Information

• Brand: WESTERN ENTERPRISES
• Manufacturer Part Number: 604