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Precise Refrigerant Metering for High-Efficiency Phase Change

The expansion valve is a pillar of the refrigeration cycle, responsible for the critical transition from high-pressure liquid to low-pressure flash gas. By precisely metering refrigerant flow into the evaporator, these valves manage the heat absorption process and protect your compressors from liquid slugging. Stellar stocks a wide range of expansion valves designed to maintain optimal superheat, maximize system efficiency, and protect your compressors.

Thermostatic Expansion Valves (TXV/TEV)

The industry standard for reliable, mechanical refrigerant expansion control. We stock complete valves as well as replacement power heads and orifice sets for major brands like Danfoss and Sporlan, to keep your refrigeration up and running at peak efficiency.

Electronic Expansion Valves (EEV)

For systems requiring the highest level of precision and energy efficiency, we stock advanced Electronic Expansion Valves. EEV valves integrate with your system鈥檚 PLC or electronic controllers to provide micro-step refrigerant metering, allowing for much tighter temperature control and lower head pressures than mechanical alternatives. We stock EEV bodies and compatible actuators to keep your high-tech cooling loops running at peak performance.

Float Valves and Pilot-Operated Solutions

In large-scale flooded systems and high-tonnage industrial evaporators, we stock heavy-duty float valves and pilot-operated expansion valves. Whether you are managing high-side or low-side liquid levels, our selection of Hansen and Danfoss float switches and valves ensures consistent liquid management in the most demanding environments. These "force-multiplier" valves are essential for systems where flow rates exceed the capacity of standard mechanical TXVs.

The Stellar Advantage: National Fulfillment of OEM Hardware

Maintaining your system鈥檚 "brain" requires exact-match OEM components鈥攏ot generic substitutes that "might fit." Stellar leverages our national warehouse network to deliver authentic OEM expansion valves and internal repair kits directly to you. By stocking the specific hardware required for your equipment鈥檚 design parameters, we ensure 100% compatibility, maintained warranties, and the rapid response time necessary to keep your facility's "phase change" process operating flawlessly.