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 2 3 5 4 7 5 8 1/8, 1/4 1/4, 3/8 1/4, 3/8 1 2 3 C [dm3/(s・bar)] b 0.23 0.41 0.62 0.62 1.08 0.75 1.58 240 240 240 370 370 490 490 0.63 0.68 0.39 0.52 0.44 0.55 0.33 0.63 1.05 2.20 1.90 3.99 1.96 5.67 Cv Flow-rate characteristics VX240 VX250 VX260 VX240 VX250 VX260 Size Port size Orifice diameter (mmo) Model Maximum operating pressure differential (MPa) 0.9 0.45 0.2 0.9 0.45 0.2 0.8 0.15 0.8 0.15 0.8 0.3 0.8 0.3 0.82 1.25 1.45 0.82 1.81 2.11 1.69 3.14 1.68 3.54 2.50 2.77 2.50 2.56 2 3 5 2 3 5 4 7 4 7 5 8 5 8 o6 o8 o8 o10 o10 o12 1 2 3 C [dm3/(s・bar)] b Cv Flow-rate characteristics 0.44 0.34 0.43 0.44 0.40 0.32 0.40 0.34 0.49 0.36 0.44 0.82 0.42 0.88 0.23 0.35 0.40 0.23 0.41 0.56 0.47 0.84 0.50 0.90 0.70 1.22 0.70 1.38 240 240 240 240 240 240 370 370 370 370 500 500 500 500 1 2 1.0 1.0 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. AIuminum Body Type Resin Body Type (Built-in One-touch Fittings) 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. For Air Single Unit Series VX21/22/23 Model/Valve Specifications Symbol N.O. Fluid and Ambient Temperature Note) Dew point temperature: .10°C or less .20 to 60 Fluid temperature (°C) Ambient temperature (°C) .10 Note) to 60 Internal Leakage Note 1) Leakage is the value at ambient temperature 20°C. Note 2) For seal material/FKM, refer to “Other Options” on page 21 for the selection. External Leakage NBR (FKM) Seal material Note 2) Leakage rate (Air) Note 1) 1 cm3/min or less (AIuminum body type) 15 cm3/min or less (Resin body type) NBR (FKM) Seal material Note 2) Leakage rate (Air) Note 1) 1 cm3/min or less (AIuminum body type) 15 cm3/min or less (Resin body type) Max. system pressure (MPa) Max. system pressure (MPa) Weight (g) Note) Valve Leakage Rate Weight (g) Note) A 6