VXFA22 Datasheet PDF - SMC
| Part Number | VXFA22 | |
| Description | Direct Operated 3 Port Solenoid Valve | |
| Manufacturers | SMC | |
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There is a preview and VXFA22 download ( pdf file ) link at the bottom of this page. Total 30 Pages | ||
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CAT.EUS70-26 A -UK
Direct Operated
3 Port Solenoid Valve
For Water, Oil, Steam, Air
Reduction of
power consumption
(DC specification)
6 W 4.5 W
78 W W
11.5 W 10.5 W
3New
VX Series VX31/32/33
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Solenoid Valves Flow Characteristics
C : Sonic conductance [dm3/(s·bar)]
b : Critical pressure ratio [—]
P1 : Upstream pressure [MPa]
P2 : Downstream pressure [MPa]
t : Temperature [°C]
Note) Formula of subsonic flow is the elliptic analogous curve.
Flow characteristics curve is indicated in the Graph (1) For details, please use SMC’s “Energy Saving Program”.
Example)
Obtain the air flow rate when P1 = 0.4 [MPa], P 2 = 0.3 [MPa], t = 20 [°C] for a solenoid valve where C = 2 [dm3/(s·bar)] and b = 0.3.
According to formula (1), the maximum flow rate = 600 x 2 x (0.4 + 0.1) x
293
————— = 600 [dm3/min (ANR)]
273 + 20
Pressure ratio = —0—.3—+ 0—.1— = 0.8
0.4 + 0.1
Based on the Graph (1), the flow rate ratio is going to be 0.7 if it is read with a pressure ratio of 0.8 and a flow ratio of b = 0.3.
Hence, flow rate = Max. flow rate x flow rate ratio = 600 x 0.7 = 420 [dm3/min (ANR)]
1
0.9 b = 0.1
0.8 0.2
0.7 0.3
0.6 0.4
0.5
0.5
0.6
0.4
0.3 P1 Equipment P2
0.2 C, b Q
0.1
00 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Pressure ratio (P2 + 0.1) / (P1 + 0.1)
Graph (1) Flow characteristics line
(4) Test method
Pipe the text equipment to the text circuit shown in Fig. (1). Keep the upstream pressure at a certain constant level above
0.3MPa. First measure the maximum flow rate in saturation. Then, measure the flow rate, upstream pressure and downstream
pressure each at 80%, 60%, 40% and 20% points of the flow rate. Calculate the sonic conductance C from the maximum flow
rate. Also substitute other data for variables in the formula for subsonic flow and obtain the critical pressure rate b by averaging
the critical pressure rates at those points.
Pressure control
equipment
ød3 ≥ 3d1
Pressure gauge or
pressure convertor
Thermometer
Differential pressure gauge or
differential pressure converter
3d3 Flow control valve
Air supply Filter
Shut off
valve
≥ 10d3
Flow meter
10d1 3d1 10d2
3d2
Pipe for measuring
temperature
Equipment
for test
Pipe for measuring Pipe for measuring
pressure in the
pressure in the
upstream side
downstream side
Fig. (1) Test circuit based on ISO 6358, JIS B 8390
Front matter 2
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for VXFA22 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ VXFA22.PDF Datasheet ] | |
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