3 x 1/4" female fittings Faema part number 2251131855. This version includes the three PTFE gaskets in the ports. Another version is out there with three parallel terminals and a wire lead.
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.