Datasheet
Flow-rate Characteristics
Port size
(Nominal
diameter)
Body
material
Orifice diameter
[mmø]
Min. operating
pressure
differential
Note 1)
[MPa]
Max. operating pressure
differential [MPa]
AC DC
0 1.0 1.5
Model
Max. system
pressure
[MPa]
10
15
20
25
0.7
1.0
Aluminium
Resin
C37 (Brass)
,
Stainless
steel
C
[dm
3
/(s·bar)]
bCv
—
185
400
720
1100
1300
—
Flow-rate characteristics
Normally Closed (N.C.)
N.C.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
Note 1) Leakage is the value at ambient temperature 20°C.
Note 2) When the product is used with low vacuum (to 133 Pa.abs), give
caution to the external leakage outlined above.
NBR, FKM
Seal material
Leakage rate (Air)
Note 1)
15 cm
3
/min or less (Aluminium body type)
15 cm
3
/min or less (Resin body type)
1 cm
3
/min or less (Metal body type)
NBR, FKM
Seal material
Leakage rate (Air)
Note 1)
15 cm
3
/min or less (Aluminium body type)
15 cm
3
/min or less (Resin body type)
1 cm
3
/min or less (Metal body type)
Weight
[g]
For Air
Effective area
[mm
2
]
Note) Dew point temperature: −10°C or less
Ambient temperature [°C]
−20 to 60
Fluid temperature [°C]
−10
Note)
to 60
External Leakage
Symbol
6.2
5.3
8.0
8.5
9.3
23.0
36.0
0.38
0.44
0.43
0.34
0.26
1.7
1.2
2.0
2.4
2.6
6.0
9.4
ø10
ø3/8"
ø12
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
VXZ230
VXZ240
VXZ250
VXZ260
Note 1)
The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
2
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.
∗ Can be used with low vacuum (up to 133 Pa.abs).
Note 2)
Series VXZ
4