Normally Closed (N.C.) Normally Open (N.O.) Size Port size Orifice diameter (mmo) Model Maximum operating pressure differential (MPa) 0.9 0.45 0.2 0.8 0.15 0.8 0.3 320 320 320 490 490 620 620 2 3 5 4 7 5 8 1/8, 1/4 1/4, 3/8 1/4, 3/8 1 2 3 AV (x 10.6m2) 0.23 0.42 0.63 0.63 1.08 0.75 1.58 5.5 10.0 15.0 15.0 26.0 18.0 38.0 Conversion Cv Flow-rate characteristics VX243 VX253 VX263 Note) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively. . Refer to “Glossary of Terms” on page 35 for details on the maximum operating pressure differential. Size Port size Orifice diameter (mmo) Model Maximum operating pressure differential (MPa) 1 0.6 0.2 1 0.15 1 0.3 0.1 0.1 2 3 5 4 7 5 8 10 10 1/8, 1/4 1/4, 3/8 1/4, 3/8 1/2 1 2 3 AV (x 10.6m2) 0.23 0.42 0.63 0.63 1.08 0.75 1.58 2.21 2.21 Conversion Cv Flow-rate characteristics VX213 VX223 VX233 5.5 10.0 15.0 15.0 26.0 18.0 38.0 53.0 53.0 300 300 300 460 460 580 580 580 630 1 2 1 2 1.0 Max. system pressure (MPa) 1.0 Max. system pressure (MPa) . This valve can also be used with air or water. (Refer to the valve specifications for air or water.) The kinematic viscosity must not exceed 50 mm2/s. The special construction of the armature adopted in the built-in full-wave rectifier type gives an improvement in OFF response by providing clearance on the absorbed surface when it is switched ON. When the fluid is oil. For Oil Single Unit Series VX21/22/23 Model/Valve Specifications N.C. Symbol N.O. Symbol Weight (g) Weight (g) Note) Note) When the valve is closed, flow is blocked from port 1 to port 2. However, if the pressure in port 2 is higher than port 1, the valve will not be able to block the fluid and it will flow from port 2 to port 1. When the valve is closed, flow is blocked from port 1 to port 2. However, if the pressure in port 2 is higher than port 1, the valve will not be able to block the fluid and it will flow from port 2 to port 1. Fluid and Ambient Temperature Valve Leakage Rate FKM Seal material Leakage rate (Oil) Note) 0.1 cm3/min or less FKM Seal material Leakage rate (Oil) Note) 0.1 cm3/min or less Note) Kinematic viscosity: 50 mm2/s or less Ambient temperature (°C) .20 to 60 Fluid temperature (°C) .5 Note) to 60 Internal Leakage External Leakage Note) Leakage is the value at ambient temperature 20°C. 16