Datasheet

@
@
Inlet pressure
(IN)
Pressure in
diaphragm chamber
Figure 2 Backflow
.
:
;
Figure 1 Normal
.
:
;
IN
Inlet pressure
OUT
Outlet pressure
IN
Inlet pressure
OUT
Outlet pressure
o
t
K
C
O
L
H
S
U
P
SMC
A
A
A-A
@
Inlet pressure
(IN)
Pressure in
diaphragm chamber
AW20K-B to AW60K-B
Working Principle (Filter Regulator with Backfl ow Function)
When the inlet pressure is higher than the regulating pressure, the check valve w closes and operates as a normal regulator (Figure 1).
When the inlet pressure is shut off and released, the check valve w opens and the pressure in the diaphragm chamber q is released
into the inlet side (Figure 2). This lowers the pressure in the diaphragm chamber q and the force generated by the pressure regulator
spring e lifts the diaphragm. The valve r opens through the stem, and the outlet pressure is released to the inlet side (Figure 2).
94
Filter Regulator with Backfl ow Function Series AW20K-B to AW60K-B
AC
AF

AR

ALAW

ALAF

ARAF

AFM

ARAW

AFM
AF Attachment
AFM / AFD
ARALAW