150 / 226
0
4
8
12 16
No. of turns
RFU-446
RFU-444
17.5
14.0
10.5
7.0
3.5
0
Flow, Qn [SCFM]
0
4
8
12 16
No. of turns
RFU-483
RFU-482
5
4
3
2
1
0
Flow, Qn [SCFM]
UNIDIRECTIONAL FLOW CONTROLLERS
M5 [10-32 UNF]
RFU 452-M5
Mod. RFU-452 flow from B
→
A needle type
OPEN = 55 NL/min
[1.94 SCFM]
CLOSED = 41 NL/min
[1.45 SCFM]
NB: Qn is determined with a pressure of 6 bar at the inlet
and
D
P=1 bar at the outlet.
N° = number of screw turns
To ensure the right choice of 1/4” unidirectional flow controller
Mod. RFU 444 or Mod. RFU 446, proceed as follows:
calculate the quantity of air in Nl/min. (see cylinder table),
determine the stroke time of the cylinder;
refer to the graph to see which controller
is the right type. In the case of bidirectional regulators,
refer to the graph and check whether the flow control
range is suitable for the work required.
1/8” NPFT
1/4” NPFT
RFU 482-02
RFU 483-02
Mod. RFU 482 flow from B
→
A needle type
OPEN = 149 NL/min
[6.32 SCFM]
CLOSED = 130.5 NL/min
[4.61 SCFM]
Mod. RFU 483 flow from B
→
A needle type
OPEN = 180 NL/min
[6.36 scfm]
CLOSED = 140 NL/min
[4.94 SCFM]
NB: Qn is determined
with a pressure of
6 bar at the inlet
and
D
P = 1 bar at
the outlet.
N° = number of
screw turns.
RFU 444-04
RFU 446-04
Mod. RFU 444 flow from B
→
A needle type
OPEN = 680 NL/min
[24.01 SCFM]
CLOSED = 534 NL/min
[18.86 SCFM]
Mod. RFU 446 flow from B
→
A needle type
OPEN = 680 NL/min
[24.01 SCFM]
CLOSED = 534 NL/min
[18.86 SCFM]
NB: Qn is determined
with a pressure of
6 bar at the inlet
and
D
P = 1 bar at
the outlet.
N° = number of
screw turns.
i n - l i n e f l ow con t ro l v a l v e s
The company reserves the right to vary models and dimensions without notice.
These products are designed for industrial applications and are not suitable for sale to the general public.
140
N P T F/ I NCH
f l ow con t ro l v a l v e s & a c c e s sor i e s
4