24 volt Lucifer coil, includes no return valve.
Parker-Hannifin bought out the Lucifer division, so all Lucifer coils now say Parker on them, but they still use the original Lucifer model/part numbers (they also left a raised embossed printing that says Lucifer on the top of some coils) and are only compatible with the Lucifer version valves. Some models now use the Sirai brand.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.