2 1 Series VXD For Air Symbol N.C. Body Port size material Orifice diameter (mmo) Model Maximum system pressure (MPa) 225 415 560 880 . . 1.5 10 15 20 25 35 40 50 1/4 (8A) 3/8 (10A) 1/2 (15A) o10 o3/8" o12 3/8 (10A) 1/2 (15A) 3/4 (20A) 1 (25A) 32A Flange 40A Flange 50A Flange AIuminum CAC407 AC DC C 0.35 0.33 0.33 0.33 0.35 0.30 8.5 9.2 9.2 5.6 4.8 7.2 18.0 20.0 38.0 0.9 1.0 1.0 0.7 0.02 0.03 b 2.0 2.4 2.4 1.3 0.9 1.5 5.0 5.5 9.5 370 370 370 330 330 330 720 720 840 1360 5400 6800 8400 Cv Effective area (mm2) Minimum operating Maximum operating pressure differential Flow-rate characteristics pressure differential Note 1) (MPa) Normally Closed (N.C.) VXD230 VXD240 VXD250 VXD260 VXD270 VXD280 VXD290 Weight (g) Resin Stainless steel, C37 Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps, compressors, etc.) or the type of pipe restrictions. Note 2) 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 139 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum system pressure. Refer to “Glossary of Terms” on page 139 for symbol. Model/Valve Specifications Note 2) 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 Valve Leakage 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 121 for the selection. External Leakage Seal material Leakage rate (Air) Note 1) VXD23 to 26 (8A to 25A) VXD27 to 29 (32A to 50A) 15 cm3/min or less (AIuminum body type) 15 cm3/min or less (Resin body type) 1 cm3/min or less (Metal body type) 1 cm3/min or less NBR (FKM) Note 2) NBR (FKM) Note 2) Seal material Leakage rate (Air) Note 1) VXD23 to 26 (8A to 25A) VXD27 to 29 (32A to 50A) 15 cm3/min or less (AIuminum body type) 15 cm3/min or less (Resin body type) 2 cm3/min or less (Metal body type) 10 cm3/min or less 106