Danfoss HIU Spare Parts Danfoss 18185404 Pressure Gauge 0–4 bar – VVX-I / R / FI HIU

The 18185404 pressure gauge is a 0–4 bar manometer used in compatible Danfoss/Termix Heat Interface Units and apartment substations, including VVX-I/R/FI applications referenced in UK HIU spares catalogues. The gauge provides a local visual indication of heating-system pressure for commissioning, servicing and fault diagnosis.