Solenoid Valves

Trane solenoid valves are OEM replacement flow-control components designed for use in Trane HVAC and refrigeration equipment, using electrical actuation to open or close refrigerant, gas, and water lines within the systems they were originally engineered for. Trane solenoid valves span a range of application types including refrigerant circuit isolation for R-410A equipment, compressor unloading on commercial chiller platforms, gas shutoff on furnace and heating equipment, humidifier water supply lines, and multi-circuit hot gas or liquid line management. Because Trane solenoid valves are OEM components, matching the correct part number to the system model prevents compatibility issues that aftermarket alternatives can introduce. Getting the right valve body and coil combination for the specific equipment is the first decision, and everything else follows from there.

Refrigerant solenoid valves, gas solenoid valves, and humidifier solenoid valves cover the main application groups within the Trane solenoid valve lineup, and each group has distinct voltage, connection, and compatibility requirements. Coils are sold separately from valve bodies on several Trane solenoid valve configurations, which matters when replacing a failed coil without pulling the valve body from the line. Matching the coil voltage to the control circuit, and confirming the refrigerant compatibility of the valve body before ordering, keeps the replacement straightforward on the first trip.

KEY SUBCATEGORIES / PRODUCT TYPES

R-410A Refrigerant Solenoid Valves

R-410A refrigerant solenoid valves in the Trane lineup are used for liquid line isolation, suction line control, and hot gas applications in R-410A systems. SKU VAL09133 is a normally closed R-410A solenoid valve without a manual lift stem, compatible with R-410A refrigerant, and designed for use with the COL11860 24V AC coil. A normally closed valve stays shut when de-energized, which is the fail-safe position for liquid line and suction line isolation in most refrigeration circuits. Contractors specifying VAL09133 should confirm coil availability separately, as the valve body and coil are ordered independently.

24V General Purpose Solenoid Valves

The 24V solenoid valve SKU VAL08193 is an OEM Trane component rated for 24-volt control circuits, commonly used across a range of Trane residential and light commercial HVAC equipment. VAL08193 is a direct OEM replacement and is the correct choice when the system's service documentation calls for that specific part number. Verifying the model number on the equipment nameplate before ordering prevents substitution errors on multi-model service calls.

Compressor Unloader Solenoid Valves

Unloader solenoid valves handle a different job than refrigerant isolation valves. SKU VAL02843 is a 1/4" NPTE unloader solenoid valve used on Trane Series R screw chiller platforms, specifically compressor models CHHA, CHHB, CHHC, and CHHN. VAL02843 requires the 120V solenoid coil COL04723, which is sold separately, and first-time replacements on the valve body will need the coil ordered alongside it. The 1/4" NPTE male unloader connection is specific to the chiller compressor assembly, so confirming the chiller model before ordering is worth the extra minute.

Three-Way Solenoid Valves

Three-way solenoid valves serve different circuit configurations than standard 2-way isolation valves. SKU VAL10643 is a 3-way solenoid valve body sold less coil, designed for applications within Trane equipment where a single valve manages flow between two separate circuits or paths. VAL10643's less-coil configuration means the appropriate coil must be sourced separately and matched to the system's control voltage before installation. Three-way solenoid valves appear in applications such as hot gas bypass circuits and reversible refrigerant flow configurations.

Humidifier and Gas Solenoid Valves

Humidifier and gas solenoid valves round out the Trane solenoid valve category for HVAC technicians servicing whole-system equipment. SKU VAL08194 is a humidifier solenoid valve used to control the water supply line in Trane humidification equipment. SKU VAL01917 is a 1/4" x 1/4" solenoid gas valve rated for 120V, used in Trane gas-fired heating equipment where the solenoid controls gas flow to the burner. VAL03520 is a solenoid valve body, less coil, with .62 OD x .62 OD connections, used in refrigerant circuit applications where the coil is replaced independently.

BUYING GUIDE / HOW TO CHOOSE

Selecting the correct Trane solenoid valve starts with the equipment model and serial number. Trane solenoid valves are OEM components engineered for specific equipment lines, and the part number on the system's wiring diagram or service documentation is the most reliable way to confirm the correct replacement. Ordering by description alone, without cross-referencing the equipment model, can result in a part that physically resembles the original but doesn't match the connection size, voltage, or refrigerant compatibility required.

Coil voltage is the next critical variable. Trane solenoid valve coils run at either 24V or 120V depending on the control circuit in the equipment. VAL08193 and VAL09133 use 24V coils, while VAL01917 is a 120V gas valve and COL04723 is a 120V coil paired with the VAL02843 chiller unloader. Mixing coil voltage with the wrong control circuit can damage the coil or prevent the valve from actuating correctly.

On valve bodies sold less coil, confirming whether the existing coil is serviceable before ordering just the body can avoid a second order. VAL02843, VAL03520, and VAL10643 are all sold without coils. If the coil failed and the valve body is intact, the coil alone may be the right order. If both need replacement, both need to be on the same purchase.

Refrigerant compatibility matters on any solenoid valve used in a refrigerant circuit. VAL09133 carries explicit R-410A compatibility designation. When replacing solenoid valves in systems running R-410A, confirming the valve body's refrigerant rating against the equipment specification prevents a mismatch that could cause premature failure. Trane solenoid valves that carry OEM part numbers are rated and tested for use in the specific equipment they were designed for, which removes the guesswork on refrigerant compatibility when the correct part number is confirmed.

For compressor unloader applications like VAL02843, checking whether superseded part numbers apply is worth a moment. VAL02843 supersedes earlier Trane part numbers including VAL02770 and VAL-2770, which appear in older chiller documentation. Confirming the current part number against the chiller's updated parts list avoids ordering an obsolete designation that may no longer be stocked.

FAQs

What's the difference between a Trane solenoid valve sold with a coil and one sold less coil?

The distinction between Trane solenoid valves sold with a coil versus less coil is whether the electrical actuator is included in the purchase. Valve bodies listed as "less coil," such as VAL02843, VAL03520, and VAL10643, require the coil to be ordered separately. Coils are voltage-specific, so the correct coil must be matched to the system's control circuit voltage before ordering.

Which Trane solenoid valve is correct for R-410A refrigerant circuit applications?

SKU VAL09133 is Trane's OEM normally closed solenoid valve designated for R-410A refrigerant service and is sold without a manual lift stem. VAL09133 is used with the COL11860 24V AC coil, which is ordered separately. For any R-410A application, confirming the equipment model against the service documentation before specifying a solenoid valve avoids compatibility issues.

What coil does the Trane VAL02843 unloader solenoid valve use?

The coil for Trane solenoid valve VAL02843 is COL04723, a 120V solenoid coil sold separately. VAL02843 is used on Trane Series R screw chiller compressors in the CHHA, CHHB, CHHC, and CHHN model families. First-time replacements of VAL02843 will require COL04723 to be ordered alongside the valve body.

Can a Trane solenoid valve coil be replaced without replacing the valve body?

On Trane solenoid configurations sold less coil, replacing the coil independently from the valve body is possible when the valve body itself is intact and the coil is the failed component. Coils such as COL04723 and COL03780 are sold as individual replacement parts. Confirming that the valve body hasn't been damaged before ordering only the coil avoids a return trip.

How do OEM Trane solenoid valves differ from aftermarket replacements in HVAC service?

OEM Trane solenoid valves are engineered and tested specifically for the equipment models they were designed for, meaning the refrigerant compatibility, pressure ratings, connection dimensions, and coil voltage are matched to the original system specifications. Aftermarket alternatives may meet general solenoid valve specifications but can fall short on system-specific fit and performance criteria that OEM components satisfy by design. When service documentation calls for a specific Trane part number, using the OEM component removes the uncertainty from the repair.