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Designed for use in corrosive enviroments
Metallic parts meet NACE* Standard MR-01-75
Applications include marine enviroments,
oil and gas production, chemical and food
processing, medical analysis
Model for precision regulation and high flow
* National Association of Corrosion Engineers – recognised oil-field recommendation for
resistance to sulphide stress cracking common in well-head and other corrosive environments
Technical features
Medium:
Compressed air only
Maximum inlet pressure:
31 bar (manual drain)
17 bar (246 psi)(autodrain)
Outlet pressure range:
0,04 ... 2 bar, 0,07 ... 4 bar
0,25 ... 7 bar, 0,4 ...10 bar
(0,58 ... 29 psi, 1 ... 58 psi
3,6 ... 101 psi, 5,8 ...145 psi)
Element:
5 or 25 μm
Port sizes:
1/4 PTF
1/4 PTF (gauge), 1/8 NPT (relief)
1/4 PTF (automatic drain)
Drain:
Manual or automatic
Automatic drain operation
conditions (float operated):
To close: > 0,3 bar (4,35 psi)
Precision filter/regulator (stainless steel)
1/4 PTF
To open: < 0,2 bar (2,9 psi)
Minimum air flow required to
close 1 dm
3
/s
Fluid/Ambient temperature:
-40 ... +80°C (-40 ... +176°F)
Air supply must be dry enough
to avoid ice formation at
temperatures below +2°C(+35°F).
Materials:
Body, bowl, bonnet & adjusting
screw: stainless steel
Filter element: High density
polyethylene (25 μm),
stainless steel (5 μm)
Elastomers: Synthetic rubber
B38
Technical data, standard model, relieving and panel nut
Symbol Port size Outlet
pressure (bar)
1/4 PTF 0,25 ... 7 25 8 Manual 1,4 B38-244-B2KA
1/4 PTF 0,07 ... 4 25 8 Manual 1,4 B38-244-B2FA
1/4 PTF 0,07 ... 4 25 8 Automatic 1,6 B38-244-A2FA
* Typical flow with 7 bar inlet pressure, 1 bar set pressure and 0,05 bar drop from set.
Element
(μm)
Flow *
(dm
Option selector
Diaphragm & mounting Substitute
Relieving
Non-relieving
Relieving with neck mounting
bracket
Non-relieving with neck mounting
bracket
Relieving with panel nut
Non-relieving with panel nut
Drain Substitute
Automatic - long bowl
Manual - short bowl
Manual - long bowl
0
1
2
3
4
5
A
B
M
Drain Weight
3
/s)
B38-24˙-˙˙˙A
(kg)
Model
Outlet pressure adjustment
ranges (bar)*
0,04 ... 2
0,07 ... 4
0,25 ... 7
0,4 ... 10
Element Substitute
5 µm
5 µm
2
* Outlet pressure can be adjusted to
pressures in excess of, and less than,
those specified. Do not use these units
to control pressures outside of the
specified ranges.
Substitute
C
F
K
M
1
2
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document.
N/en/en 8.530.320.0111/12
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B38
Flow characteristics
Inlet pressure: 7 bar, filter element: 25 μm, port size: 1/4 PTF
(bar)
3
2
1
Outlet pressure
10
345678 91011
2
Flow rate
Accessories
Panel nut Neck mounting bracket Neck mounting bracket Gauge * Plastic adjusting knob
(dm3/s)
5988-02 5989-02 18-001-973 (includes panel nut) 18-013-913 (0 ... 6 bar) 74630-04
18-013-909 (0 ... 10 bar)
* Stainless steel items not strictly to NACE standard MR-01-75.
Sevice kits
Filter element Valve assembly and diaphragm Drain kit
B38-100S(5) (5 µm element) 2 bar relieving R38-100R 3000-90 (automatic)
B38-100S(25) (25 µm element) 4 and 7 bar relieving R38-101R
10 bar relieving R38-102R
2 bar non-relieving R38-100NR
4 and 7 bar non-relieving R38-101NR
10 bar non-relieving R38-102NR
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document.
11/12N/en/en 8.530.320.02
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B38
64
170 #
160 #
64
120 #
75
Dimensions
Automatic drain Manual drain, long bowl
ø 41
64
0 ... 6
53
42
1
131,5 118
8,5
1/4 NPT
13
2
ø 41
27
64
Dimensions shown in mm
Projection/First angle
0 ... 6
53
42
1
121 118
13
Manual drain, short bowl
0 ... 6
ø 41
53
42
80
1
64
13
118
64
Neck mounting bracket
2
1,5
35
65
54
8,5
25
6,5
38
41
# Minimum clearance required to remove bowl
1
1/4 PTF Gauge port
2
1/8 PTF Relief port
11/12 N/en/en 8.530.320.03
75
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document.
Page 4
B38
Warning
These products are intended for use in industrial compressed air
systems only. Do not use these products where pressures and
temperatures can exceed those listed under »Technical features«.
Before using these products with fluids other than those specified,
for non-industrial applications, life-support systems, or other applications not within published specifications, consult NORGREN.
Through misuse, age, or malfunction, components used in
fluid power systems can fail in various modes.
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document.
The system designer is warned to consider the failure modes
of all component parts used in pneumatic systems and to provide
adequate safeguards to prevent personal injury or damage to
equipment in the event of such failure.
System designers must provide a warning to end users in
the system instructional manual if protection against
a failure mode cannot be adequately provided.
System designers and end users are cautioned to review specific
warnings found in instruction sheets packed and shipped with
these products.
11/12N/en/en 8.530.320.04
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