VXD2140-04T-3CR1 SMC Corporation, VXD2140-04T-3CR1 Datasheet - Page 4

• Manufacturer Part Number: VXD2140-04T-3CR1
• Description: Process Solenoid Valve, 2 port, pilot operated, 1/2 port, NC, 110VAC, conduit
• Manufacturer: SMC Corporation
• Type: Pilot Operatedr

Specifications of VXD2140-04T-3CR1

• Brand/series: VX Series
• Number Of Ports: 2
• Primary Type: Solenoid Valve
• Size, Port: 1⁄2" NPTF
• Voltage, Coil: 110 VAC
• Enclosure: Equivalent to IP65

3. Equipment for process fluids
2.3 Flow coefficient
(1) Standards conforming to
(2) Definition of flow characteristics
(3) Formula of flow rate
The United States Standard ANSI/(NFPA)T3.21.3:1990: Pneumatic fluid power—Flow rating test procedure
and reporting method for fixed orifice components
defines the Cv factor of flow coefficient by the following formula which is based on the test conducted by the test circuit
analogous to ISO 6358.
Cv = ——————————
∆
P
P
Q
Pa
T
This is the same concept as effective area
smaller than the upstream pressure and the compression of air does not become a problem.
IEC60534-2-3: 1997: Industrial process control valves. Part 2: Flow capacity, Section Three-Test
JIS B 2005: 1995: Test method for the flow coefficient of a valve
Equipment standards: JIS B 8471: Regulator for water
Av
Av
Av
Q
∆ P
ρ
It is described by the known unit. Also, the flow characteristics line shown in the Graph (2).
In the case of liquid:
Q
Q
Av
∆ P
G
In the case of saturated aqueous vapor:
Q
Q
Av
∆ P
P
P
is <
P
1
1
2
1
2
= 1.9 x 10
= 8.3 x 10
=
: Flow coefficient [m
: Flow rate [m
: Pressure difference [Pa]
: Density of fluid [kg/m
: Flow rate [
: Flow coefficient [m
: Pressure difference [MPa]
: Relative density [water = 1]
: Flow rate [m
: Flow coefficient [m
: Pressure difference [Pa]
: Relative density [MPa]:
: Relative density [MPa]
factor: Value of the clean water flow rate represented by m
P
: Pressure drop between the static pressure tapping ports [bar]
: Pressure of the upstream tapping port [bar gauge]
: Pressure of the downstream tapping port [bar gauge]:
: Flow rate [dm
: Atmospheric pressure [bar absolute]
: Test conditions of the upstream absolute temperature [K]
Q
114.5
1
+ P
——— ·········································································································(8)
pressure difference is 1 Pa. It is calculated using the following formula.
∆
P
ρ
a
6
6
Av
Av ∆ P(P
=
——————
∆
l
P
/min]
6.5
3
3
/s]
/s]
——— ···························································································(9)
Q
(
P
3
∆
G
T
±
/s standard condition]
Cv
P
2
1
0.2 bar absolute,
+
2
2
2
2
]
]
]
P
+ 0.1) ·············································································(10)
factor
3
procedures
a
]
JIS B 8472: Solenoid valve for steam
JIS B 8473: Solenoid valve for fuel oil
)
∆ P
=
·············································································(7)
P
1
–
P
Solenoid Valves Flow Characteristics
T
2
1 = 297 ± 5K, 0.07 bar ≤
A
which ISO6358 stipulates as being applicable only when the pressure drop is
P
2
=
3
P
/s which runs through a valve (equipment for test) when the
1
∆ P
– ∆
P
≤ 0.14 bar.
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