Keterangan :
Metrological Characteristics
Nominal diameter ( DN) mm 15 and 20 ( 1/ 2" and 3/ 4" )
Maximum flow rate Qs m3/ h : 3 and 5
Nominal flow rate Qp m3/ h : 1.5 and 2.5
Transitional flow rate Qt ( ± 2% ) l/ h : 120 and 200
Minimum flow rate Qmin ( ± 5% ) l/ h: 30 and 50
Starting flow rate l/ h :