Carrier 32GB403274 1-1/8″ 75-Ton Electronic Expansion Valve

Description

The Carrier 32GB403274 is a heavy-duty Electronic Expansion Valve (EXV) engineered for large-scale commercial HVAC and refrigeration systems. With a 1-1/8″ connection size and a robust 75-ton capacity rating, this valve delivers precise, electronically controlled refrigerant metering to maximize system efficiency, protect compressors, and maintain consistent superheat across a wide range of operating conditions.

Key Features

• OEM Carrier replacement part — direct-fit for compatible 75-ton commercial systems
• 1-1/8″ valve body connection for high-capacity refrigerant flow
• 75-ton capacity rating — ideal for large commercial chillers, rooftop units, and applied systems
• Electronic expansion control for precise superheat management and improved system efficiency
• Replaces worn or failed EXV components to restore full system performance
• Durable construction built to Carrier’s OEM quality standards
• Compatible with Carrier commercial HVAC and refrigeration equipment requiring EXV refrigerant metering

Why Choose an Electronic Expansion Valve?

Unlike traditional thermostatic expansion valves, an Electronic Expansion Valve (EXV) uses a stepper motor or pulse-driven actuator controlled by the system’s microprocessor or controller board. This allows real-time, dynamic adjustment of refrigerant flow in response to changing load conditions — delivering tighter superheat control, improved energy efficiency, and reduced compressor cycling stress in demanding commercial applications.

Application

• Large commercial rooftop units (RTUs)
• Chillers and applied HVAC systems
• Commercial refrigeration systems rated at or near 75 tons
• Any Carrier system specifying part number 32GB403274

Specifications

• SKU / Part Number: 32GB403274
• Brand: Carrier
• Connection Size: 1-1/8″
• System Capacity: 75 Ton
• Valve Type: Electronic Expansion Valve (EXV / EEV)