Datasheet
0.10
0.08
0.06
0.04
0.02
0
0 500 1000 1500
AF20
Rc1/4
Flow rate (
l
/min (ANR))
Pressure drop (MPa)
P
1
=
0.1 MPa
P
1
=
0.3 MPa
P
1
=
0.5 MPa
P
1
=
0.7 MPa
0.10
0.08
0.06
0.04
0.02
0
0 20001000 3000 4000
AF30
Rc3/8
Flow rate
(l/min (ANR))
Pressure drop (MPa)
P
1
=
0.1 MP
a
P
1
=
0.3 MPa
P
1
=
0.5 MPa
P1
=
0.7 MPa
0.10
0.08
0.06
0.04
0.02
0
0 2000 4000 6000
AF40
Rc1/2
Flow rate (l/min (ANR))
Pressure drop (MPa)
P
1
=
0.1
M
Pa
P
1
=
0.3 MPa
P
1
=
0.5 MPa
P
1
=
0.7 MP
a
0.10
0.08
0.06
0.04
0.02
0
0
AF50
Rc1
Flow rate
(
l
/min (ANR))
Pressure drop (MPa)
5000 10000 15000
P
1
=
0.1 MPa
P
1
=
0.3 MPa
P
1
=
0.5
M
Pa
P
1
=
0.7 MPa
50 100 150 200
0.10
0.08
0.06
0.04
0.02
0
0
AF10
M5
Flow rate (l/min (ANR))
Pressure drop (MPa)
P
1
= 0.1 MPa
P
1
=
0.3 MPa
P
1
=
0.5 MPa
P
1
=
0.7 MPa
0.10
0.08
0.06
0.04
0.02
0
0
AF40-06
Rc3/4
Flow rate
(
l
/min (ANR))
Pressure drop (MPa)
2000 4000 6000
P
1
=
0.1
M
Pa
P
1
=
0.3 MPa
P
1
=
0.5 MPa
P
1
=
0.7 MPa
0.10
0.08
0.06
0.04
0.02
0
0
AF60
Rc1
Flow rate (
l
/min (ANR))
Pressure drop (MPa)
5000 10000 15000
P
1
=
0.1 MP
a
P
1
=
0.3 MPa
P
1
=
0.5 MPa
P
1
=
0.7 MPa
Be sure to read this before handling. Refer to “Precautions for Handling Pneumatic Devices” (M-03-E3A) for Safety Instruc-
tions and F.R.L. Units Precautions.
Flow Characteristics
(Representative values)
Specific Product Precautions
Mounting and Adjustment
1. Replace the element every 2 years or when the pressure drop becomes 0.1 MPa, whichever comes first, to prevent damage to the
element.
Warning
Series AF10 to AF60
Working Principle: Float Type Auto Drain
• When pressure inside the bowl is re-
leased:
Even when pressure inside the bowl q is relea-
sed, spring y keeps piston u in its upward po-
sition.
This keeps the seal created by the seal !0 in
place; thus, the inside of the bowl q is shut off
from the outside air.
Therefore, even if there is an accumulation of
condensate in the bowl
q, it will not drain out.
• When pressure is applied inside the
bowl:
Even when pressure is applied inside the bowl
q, the combined force of spring y and the
pressure inside the bowl q keeps piston u in
its upward position.
This maintains the seal created by the seal !0
in place; thus, the inside of the bowl q is shut
off from the outside air.
If there is no accumulation of condensate in the
bowl q at this time float w will be pulled down
by its own weight, causing valve r, which is
connected to lever
e, to seal valve seat t.
• When there is an accumulation of
condensate in the bowl:
Float w rises due to its own buoyancy and pus-
hes open the seal created by the valve seat
t.
Pressure passes from the bowl to chamber
i.
The result is that the pressure inside chamber
i surpasses the force of the spring y and
pushes piston
u downwards.
This causes the sealing action of seal !0
to be
interrupted and the accumulated condensate in
the bowl
q drains out through the drain cock !1.
Turning drain cock !1 manually counterclockwi-
se lowers piston u, which pushes open the
seal created by seal !0, thus allowing the con-
densate to drain out.
• When pressure inside the bowl is re-
leased:
When pressure is released from the bowl q,
piston u is lowered by spring y.
The sealing action of seal !0 is interrupted, and
the outside air flows inside the bowl q through
housing hole o and drain cock !1.
Therefore, if there is an accumulation of con-
densate in the bowl q, it will drain out through
the drain cock.
• When pressure is applied inside the
bowl:
When pressure exceeds 0.1 MPa, the force of
piston u surpasses the force of spring y, and
the piston goes up.
This pushes seal !0 up so that it creates a seal,
and the inside of the bowl q, is shut off from
the outside air.
If there is no accumulation of condensate in the
bowl q at this time, float w will be pulled down
by its own weight, causing valve r, which is
connected to lever e, to seal valve seat t.
• When there is an accumulation of
condensate in the bowl:
Float w rises due to its own buoyancy and pus-
hes open the seal created by the valve seat
t.
This allows the pressure inside the bowl q to
enter the chamber i. The result is that the
combined pressure inside chamber i and the
force of the spring y lowers the piston u.
This causes the sealing action of seal !0 to be
interrupted, and the accumulated condensate in
the bowl
q drains out through the drain cock !1.
Turning drain cock !1 manually counterclockwi-
se lowers piston u, which pushes open the
seal created by seal !0, thus allowing the con-
densate to drain out.
N.C. type: AD37, AD47N.O. type: AD38, AD48
Compact auto drain
N.C. type: AD17, AD27
• When pressure inside the bowl is
released:
Even when pressure inside the bowl q is
released, the weight of the float
w causes
valve
r, which is connected to lever e, to seal
valve seat
t. As a result, the inside of the bowl
q is shut off from the outside air.
Therefore, even if there is an accumulation of
condensate in the bowl
q, it will not drain out.
• When pressure is applied inside the
bowl:
Even when pressure is applied inside the bowl
q, the weight of the float w and the differential
pressure that
is applied to valve r cause valve
r to seal valve seat t, and the outside air is
shut off from the inside of the bowl
q.
• When there is an accumulation of
condensate in the bowl:
Float w rises due to its own buoyancy and the
seal at valve seat t is interrupted.
The condensate inside the bowl
q drains out
through the knob
y.
Turning knob
y manually counterclockwise
lowers
it and causes the sealing action of valve
seat t to be interrupted, which allows the
condensate to drain out.
Bowl
Valve
Lever
Float
Valve seat
Chamber
Piston
Spring
Housing
DrainDrain
Seal
Drain cock
q
r
e
w
t
i
u
y
o
!0
!1
Bowl
Valve
Lever
Float
Valve seat
Chamber
Piston
Spring
Housing
Seal
Drain cock
q
r
e
w
t
i
y
u
o
!0
!1
Drain
Bowl
Float
Lever
Valve
Valve seat
Knob
q
w
e
r
t
y
Air Filter
Series AF10 to AF60
31