Datasheet
For Saturated Steam
Downstream pressure of valve (P2) [MPa]
Upstream pressure of valve
P
1
≈ 1.0 MPa
1.0
0.8
0.6
0.4
0.2
0
Subsonic
Sonic
Flow rate
Q
[kg/h]
0.1
(664) (183)
(663) (179)
(662) (174)
(661) (170)
(660) (164)
(658) (158)
(656) (151)
(654) (143)
(650) (133)
(646) (120)
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
51015 25
20
10 15 20 25 45
403530
40
2010 30
30
40 50 60
50 60 70 80
20 30
20
40 60
30 45
35 50
How to read the graph
The sonic range pressure to generate a flow rate of 15 kg/h is P1 ≈ 0.55 MPa for a ø2 orifice and P1 ≈ 0.28 MPa for a ø3 orifice.
The amount of potential heat varies somewhat based on the pressure P1. At 15 kg/h, there will be approximately 9700 kcal/h of heat.
Series VX21/22/23
Flow-rate Characteristics 2
Note) Use this graph as a guide. In the case of obtaining an accurate flow rate, refer to pages 32 through to 35.
ø2
ø3
ø4
ø5
ø7
ø8
ø10 (Connection: 1/4)
ø10 (Connection: 3/8, 1/2)
Critical
pressure
For Air, Medium Vacuum, Water, Oil
DIN Connector Part No.
Gasket for DIN Connector
VCW20-1-29-1
C18312G6GCU
GDM2A
Without electrical option
With electrical option (light)
Lead Wire Assembly for Faston
Terminal (Set of 2 pcs.)
VX021S-1-16FB
1
2
5
6
15
Rated voltage
100 VAC, 110 VAC
24 VDC, 24 VAC
12 VDC
48 VAC
200 VAC, 220 VAC
230 VAC, 240 VAC
L
Electrical option
With light
Replacement Parts
L
36