Datasheet

Normally Closed (N.C.)
Model/Valve Specifications
Single UnitFor Medium Vacuum
Fluid and Ambient Temperature Valve Leakage
Ambient temperature [°C]
−20 to 60
Fluid temperature [°C]
1 to 60
Note)
FKM
Seal material Leakage rate
Note)
10
−6
Pa·m
3
/sec or less
FKM
Seal material Leakage rate
Note)
10
−6
Pa·m
3
/sec or less
Note) With no freezing
Internal Leakage
External Leakage
Note) Leakage (10
−6
Pa·m
3
/sec) is the value at differential pressure 0.1
MPa and ambient temperature 20°C.
Port size
Size
Orifice diameter
[mmø]
Model
Operating pessure range
q
Used with vacuum (Pa·abs)
w
Used with pressure (MPa·G)
0.1 to
atmospheric
pressure
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
C [dm
3
/(s·bar)]
b
0.23
0.41
0.62
0.62
1.08
0.75
1.58
2.21
2.21
0.63
0.68
0.39
0.52
0.44
0.55
0.33
0.64
0.39
0.63
1.05
2.20
1.90
3.99
1.96
5.67
5.74
8.42
Cv
Flow-rate characteristics
VX214
VX224
VX234
Weight
[g]
Note)
300
300
300
460
460
580
580
580
630
0 to 1.0
0 to 0.6
0 to 0.2
0 to 1.0
0 to 0.15
0 to 1.0
0 to 0.3
0 to 0.1
0 to 0.1
Normally Open (N.O.)
Note) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
0.1 to
atmospheric
pressure
2
3
5
4
7
5
8
1/8, 1/4
1/4, 3/8
1/4, 3/8
1
2
3
0.23
0.41
0.62
0.62
1.08
0.75
1.58
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
VX244
VX254
VX264
320
320
320
490
490
620
620
0 to 0.9
0 to 0.45
0 to 0.2
0 to 0.8
0 to 0.15
0 to 0.8
0 to 0.3
Passage symbol (Application example)
21 21
N.C. N.O.
Passage symbol (Application example)
21
w Used with
pressure
q Used with
vacuum
w Used with
pressure
q Used with
vacuum
21
Refer to “Glossary of Terms” on page 29 for passage symbols. Refer to “Glossary of Terms” on page 29 for passage symbols.
Port size
Size
Orifice diameter
[mmø]
Model
Operating pessure range
q
Used with vacuum (Pa·abs)
w
Used with pressure (MPa·G)
C [dm
3
/(s·bar)]
bCv
Flow-rate characteristics
Weight
[g]
Note)
Series VX21/22/23
10