Mueller Streamline a 18964 Ball Valve Ftg X Ftg 7/8 in

Product Description

The MUELLER STREAMLINE a 18964 is a CYCLEMASTER ball valve configured with flare-to-groove (FTG x FTG) end connections in a 7/8-inch connection size. It provides reliable, full-shutoff flow control in refrigeration and HVAC systems where sweat-style brazed connections are required. The valve carries a maximum allowable pressure (MAP) of 775 psi and an operating temperature range of -40 degrees F to 300 degrees F, making it well suited for high-pressure refrigerant line service. Licensed HVAC and refrigeration technicians typically install this valve during system construction, retrofit, or service isolation work.

This ball valve is designed for use in refrigerant line sets in commercial and residential HVAC and refrigeration systems. The FTG x FTG configuration integrates directly into copper tubing assemblies using standard brazing procedures. It is commonly installed on suction, liquid, or discharge lines where a durable, pressure-rated shutoff point is needed. The wide temperature range accommodates both low-temperature refrigeration and high-ambient HVAC applications.

Key Features

• 7/8-inch FTG x FTG connection for direct integration into copper refrigerant lines
• Maximum allowable pressure of 775 psi for high-pressure refrigerant service
• Operating temperature range from -40 degrees F to 300 degrees F
• Cv of 27.50 for predictable flow performance in refrigerant circuits
• Compatible with seal cap kit a 17843 for field serviceability

Compatibility

Designed as an OEM-style replacement or new-installation ball valve for refrigerant line applications requiring a 7/8-inch FTG x FTG connection. Seal cap kit a 17843 is identified as a compatible service part.

Installation Notes

Installation should be performed by a licensed HVAC or refrigeration technician following EPA Section 608 refrigerant handling requirements. Recover all refrigerant from the system before cutting or brazing any line connections. Use standard brazing procedures appropriate for the refrigerant type and line material, and allow joints to cool fully before pressurizing. Verify system pressure does not exceed the 775 psi MAP rating of this valve.

Technical Specifications

• Connection Size: 7/8 inches
• End Type: FTG x FTG
• Cv: 27.50
• Kv: 24
• Maximum Allowable Pressure (MAP): 775 psi
• Operating Temperature (Min): -40 degrees F
• Operating Temperature (Max): 300 degrees F
• Weight: 0.87 pounds
• Seal Cap Kit: a 17843

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: a 18964