Norgren B38-240-B2KA User Manual
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
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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