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Precision Refrigerant Flow Control Since 1938
Brand history, product range & what we stock
Sporlan Valve Company has been manufacturing precision refrigerant flow control components since 1938, originally based in Washington, Missouri. Now a division of Parker Hannifin's Climate & Industrial Controls segment, Sporlan is recognized globally as a premier manufacturer of thermostatic expansion valves, solenoid valves, filter-driers, and refrigerant system accessories. Sporlan products are OEM-specified by major equipment manufacturers for their reliability and precision in controlling refrigerant flow across a wide range of operating conditions.
National HVAC Parts stocks 6,500+ genuine Sporlan flow control components for commercial refrigeration and HVAC applications. Our Sporlan inventory is comprehensive across the core product lines: C and E series TXVs, SEI and SER solenoid valves, Catch-All filter driers, and Check-All check valves. We also stock Sporlan hot gas bypass regulators, pressure regulating valves, and the full range of Sporlan sight glasses and moisture indicators.
Browse 6,500+ OEM Sporlan components organized by part type
Protect your equipment investment with factory-specification components
OEM parts available for all Sporlan system types
Common questions about Sporlan OEM replacement parts
Sporlan TXV selection requires: refrigerant type, system capacity (tons or BTU), evaporating temperature, condensing temperature, and whether you need an internally or externally equalized valve. The Sporlan Selection Guide (available at sporlan.com) provides detailed selection tables. Our team can also assist with TXV selection based on your system specifications.
The Sporlan Catch-All is a combination filter and drier that removes moisture, acid, and particulate contamination from the refrigerant circuit. This is critical after a compressor burnout (to remove acid) or any system opening (to remove moisture). Using a quality filter drier protects the replacement compressor and extends system life significantly.
Yes. We stock Sporlan solenoid valve coil assemblies, valve bodies, and complete valve assemblies separately. This is particularly useful for commercial refrigeration multiple-circuit systems where coils frequently need replacement without replacing the valve body.
The Sporlan C series uses a conventional port-and-push rod design. The E series (Equality) uses a balanced port design that provides more stable operation at varying condensing pressures. The E series is generally preferred for systems with significant fluctuation in condensing pressure, such as air-cooled systems in variable ambient conditions.
6,500+ genuine OEM components in stock. Same-day dispatch on all stocked parts.