Basic module, modular expandable with 2-way, 3-way and 4-way connection modules, consists of base with union nut 1" flat-sealing, seal, flow and return thermometer, filling and emptying unit, end caps, manifold holders, screws and wall plugs. Operating conditions max. 60 °C at 6 bar or 90 °C at 3 bar. SLQ quality-monitored and tested for compatibility, 100 % tested for tightness and function.