Priority changeover valve Vaillant 0020020015

- Suitable for Vaillant. VC 104/4-7 R1, VC 104/4-7 R2/126/3-5 R3/194/4-5 R1/195/4-5 R1/196/3-5 R3/204/4-7 R1-R2/245/4-5 R1/246/3-5 R3/254/4-7 R1-R2/306/3-5 R3/95/4-5 R1/196/3-5 R3/246/3-5 R3, VCW 195/4-5 R1/196/3-5 A R3/196/3-5 A R4/196/3-5 R3/VCW 204/4-7 R1-R2/244/4-5 R1/245/4-5 R1/246/3-5 R3/VCW 2 ...