Guernsey/Jersey (condensation), ecoTEC VU (condensation), ecoTEC VUI (condensation), ecoTEC VUW (condensation), Home (condensation), VWF (heat pump), VWL (heat) Vaillant water pressure sensor pump with dedicated pins and clips ), heat pumps (VWS), heat pump accessories (VWL) and hybrid heat pumps (VWS). Pressure sensors monitor the internal pressure of water, gas and air inside a boiler or closed system. This part fits:ecoTEC pro 22 VU 226/5-3 A R4ecoTEC pro 26 VUW 266/5-3 A R4ecoTEC plus 615ecoTEC plus 612 VU 126/5-5 R4ecoTEC plus 612 VU 126/5-5 R2ecoTEC plus 612 VU 126/5-5 A R4ecoTEC plus 612 VU 126/5-5ecoTEC plus 612 VU 126/3-5 R1ecoTEC pro 26 VUW 266/5-3 R2 Show More Show Less
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