Datasheet
Pressure loss [MPa]
0.04
0.03
0.02
0.01
0
0.04
0.03
0.02
0.01
0
0.04
0.03
0.02
0.01
0
Flow rate [L/min]
0.0 1.0 2.0 3.0 4.0
Pressure loss [MPa]
Flow rate [L/min]
0 2 4 6 8 10 12 14 16
Pressure loss [MPa]
Flow rate [L/min]
0 5 10 15 20 25 30 35 40
• The smaller the piping size, the more the product is affected by the straight piping length.
• Fluid pressure has almost no affect.
• Low flow rate lessens the effect of the straight piping length.
• Use a straight pipe that is 8 cm or longer in length to satisfy the 3% F.S. specification.
(11 cm or longer for 100 L/min and 250 L/min types)
PF3W704/504
PF3W720/520
PF3W740/540
Pressure: 0.3 MPa
Piping diameter: ø12
Pressure: 0.3 MPa
Piping diameter: ø12
Pressure: 0.3 MPa
Piping diameter: ø16
PF3W721/521
Pressure: 0.3 MPa Piping diameter: 32A (Port size 12)
40A (Port size 14)
Accuracy [% F.S.]
Straight piping length [cm]
10
9
8
7
6
5
4
3
2
1
0
0 2 4 6 8 10
Accuracy [% F.S.]
10
9
8
7
6
5
4
3
2
1
0
Straight piping length [cm]
0 2 4 6 8
PF3W704/504-;03 (at 4 L /min)
Accuracy [% F.S.]
10
9
8
7
6
5
4
3
2
1
0
Straight piping length [cm]
0 2 4 6 8
PF3W720/520-
;
03
(at 16 L /min)
PF3W721/521-
;
14
(at 250 L /min)
PF3W721/521-
;
12
(at 250 L /min)
PF3W720/520-
;
04
(at 16 L /min)
PF3W720/520-
;
03
(at 8 L /min)
Accuracy [% F.S.]
10
9
8
7
6
5
4
3
2
1
0
Straight piping length [cm]
0 2 4 6 8
PF3W740/540-
;
04
(at 40 L /min)
PF3W740/540-
;
06
(at 40 L /min)
No data for 4 cm, or for under 5 cm, as these
cannot be used due to piping dimensions.
PF3W711/511
Pressure: 0.3 MPa Piping diameter: 25A (Port size 10)
20A (Port size 06)
Accuracy [% F.S.]
Straight piping length [cm]
16
14
12
10
8
6
4
2
0
0 2 4 6 8 10
PF3W711/511-
;
10
(at 50 L /min)
PF3W711/511-
;
06
(at 50 L /min)
PF3W711/511-
;
06
(at 100 L /min)
PF3W711/511-
;
10
(at 100 L /min)
Flow-rate Characteristics (Pressure Loss: Without Flow Adjustment Valve)
Straight Piping Length and Accuracy (Reference Value)
PF3W704/504
PF3W720/520
PF3W740/540
Straight piping
length
0 50 100 150 200 250
Pressure loss [MPa]
Flow rate [L/min]
PF3W721/521
0 20 40 60 80 100
0.04
0.03
0.02
0.01
0
Pressure loss [MPa]
Flow rate [L/min]
PF3W711/511
0
0.01
0.02
0.03
0.04
0.05
5
Series PF3W