This Thermoblock connector is located on the stem of the Thermoblock. It has male threading on one end to secure it directly to the Thermoblock. There are two openings for pressure hoses, which are sealed with an o-ring and secured by a clasp connection. This connector is found on older models. The new models contain the ceramic
F-Shaped Connector that is secured to the Thermoblock by a Hairpin Clip.