Access technical sourcing intelligence for Parker Hannifin and Sporlan refrigeration flow controls. Match liquid line filter dryers, thermal expansion valves (TXVs), and vacuum recovery tools for commercial refrigeration.
Precision flow control is essential for maintaining superheat and system efficiency in commercial refrigeration. Sporlan thermal expansion valves (TXVs) utilize a thermostatic element to regulate refrigerant flow into the evaporator coil based on suction line temperature and pressure. Parker liquid line filter dryers (such as the Gold Label series) utilize a highly structured solid core of molecular sieve and activated alumina to absorb moisture, acid, and solid contaminants, protecting the compressor and TXV from restrictions.
An electrical burnout inside a semi-hermetic or hermetic compressor releases highly acidic varnish and carbon sludge into the refrigeration circuit. To protect the replacement compressor, technicians must execute a strict system cleanup protocol:
To eliminate moisture and non-condensables, a dual-stage vacuum pump rated for at least 6 CFM or 8 CFM is required. Utilize a digital micron gauge connected directly to the system's service ports (with Schrader cores removed) to verify vacuum depth. The system must achieve a vacuum of below 500 microns and hold it during a 10-minute decay test. This ensures all moisture has been boiled off and extracted, preventing acid formation and ice crystals from restricting the Sporlan TXV orifice.
Need help matching a Parker liquid line dryer, Sporlan TXV, or solenoid valve? Submit your equipment model and part number to our commercial refrigeration sourcing team.
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