16 Base Mounted Series 51-SY5000/7000/9000 Series 51-SY5000 Flow-rate Characteristics Note) [ ]: Normal position Series 51-SY7000 Note) [ ]: Normal position Series 51-SY9000 Valve model Type of actuation Port size 1→4/2 (P→A/B) 4/2→5/3 (A/B→EA/EB) Flow-rate characteristics Note) 51-SY740- -02 Single Double Closed center Exhaust center Pressure center 2- position 3- position C(dm3/(s・bar)) b Cv C(dm3/(s・bar)) b Cv 1/4 51-SY740- -03 Single Double Closed center Exhaust center Pressure center 2- position 3- position 3/8 4.1 3.0 1.0 0.72 0.41 0.43 0.29 0.41 1.1 0.80 4.1 2.6 2.6 1.1 [0.49] 0.42 0.35 [0.48] 0.71 4.7 [1.7] 5.3 [2.3] 0.63 0.39 [0.49] 0.49 1.3 [0.65] 2.2 4.9 3.0 1.1 0.73 0.29 0.40 0.27 0.45 1.2 0.80 4.5 2.6 2.6 1.1 [0.49] 0.42 0.35 [0.48] 0.71 4.8 [1.7] 5.3 [2.3] 0.66 0.31 [0.51] 0.45 1.3 [0.64] 2.3 Valve model Type of actuation Port size 1→4/2 (P→A/B) 4/2→5/3 (A/B→EA/EB) Flow-rate characteristics 51-SY940- -03 Single Double 2- position C(dm3/(s・bar)) b Cv C(dm3/(s・bar)) b Cv 3/8 51-SY940- -04 Single Double 2- position 1/2 7.9 0.34 2.0 9.6 0.43 2.6 8.0 0.48 2.2 10 0.29 2.5 Valve model Type of actuation Port size 1→4/2 (P→A/B) 4/2→5/3 (A/B→EA/EB) Flow-rate characteristics Note) 51-SY540- -02 Single Double Closed center Exhaust center Pressure center 2- position 3- position C(dm3/(s・bar)) b Cv C(dm3/(s・bar)) b Cv 1/4 2.4 1.8 0.66 0.47 0.41 0.47 0.29 0.40 0.64 0.50 2.8 1.8 1.4 0.72 [0.37] 0.55 0.33 [0.48] 0.44 3.0 [1.2] 3.3 [0.84] 0.48 0.36 [0.60] 0.40 0.85 [0.28] 1.8