Master-bilt 09-09659 Expansion Valve Txv AJB-0/55

Product Description

The MASTER-BILT 09-09659 is a thermostatic expansion valve (TXV) designed for use in commercial refrigeration systems. The TXV meters refrigerant flow into the evaporator coil, maintaining the correct superheat and protecting the compressor from liquid slugging. This valve is identified by its AJB-0/55 designation and features a 2 x 3 ODF connection configuration, making it a direct-fit component for the refrigeration circuits it was engineered to serve. Installation is performed by licensed refrigeration or HVAC-R technicians as part of a system service or retrofit procedure.

This expansion valve is intended for commercial refrigeration applications, including walk-in coolers, reach-in cases, and similar low- or medium-temperature commercial appliance systems where precise refrigerant metering is required. The AJB-0/55 model designation and ODF connection sizing are key identifiers when sourcing a replacement during a service call or planned maintenance. Technicians should verify the valve's superheat setting and refrigerant compatibility match the existing system before installation.

Key Features

• Thermostatic expansion valve (TXV) design for precise refrigerant metering and superheat control
• AJB-0/55 model designation for direct OEM-style replacement in compatible MASTER-BILT systems
• 2 x 3 ODF connection configuration for standard brazed-joint installation
• Engineered for commercial refrigeration duty cycles and operating conditions

Compatibility

Designed as an OEM-style replacement TXV for MASTER-BILT commercial refrigeration equipment requiring the AJB-0/55 valve with a 2 x 3 ODF connection. Verify system refrigerant type and superheat requirements before installation.

Installation Notes

This component should be installed by a licensed HVAC-R or refrigeration technician. Recover all refrigerant from the system before removing the existing valve, in accordance with EPA Section 608 regulations. ODF connections require brazing with appropriate silver-alloy filler material; use nitrogen purge during the brazing process to prevent internal oxidation. After installation, leak-check the system and verify superheat readings before returning the equipment to service.

Technical Specifications

• Valve Type: Thermostatic Expansion Valve (TXV)
• Model Designation: AJB-0/55
• Connection Type: 2 x 3 ODF

Standard Information

• Brand: MASTER-BILT
• Manufacturer Part Number: 09-09659