... '',ZSFU150-5'',ZSFU200-8'' Pre-caution alarm valve,Valve,Pre-caution alarm valve,Pre-action alarm valveFeatures: 1) Item no.: ZSFU100, ZSFU150, ZSFU2002) Nominal ... bars (1.2MPa)4) Strength test pressure: 48 bars (4.8MPa) Pre-caution alarm valve,Valve,Pre-caution alarm valve,Pre-action alarm valve