4
AIR
PREPARATION
PRODUCTS
APP-82
For further information www.norgren.com
Service kit includes diaphragm assembly, o-ring, valve, valve spring and 8 pan head screws.
Service Kits
R38/B38 Item Type Part number
30 psig (2 bar) Range Relieving R38-100R
60, 100 psig (4 bar, 7 bar) Range Relieving R38-101R
Fluid:
Compressed air, neutral gases
NOTE: Contact technical support
for use with other media.
Maximum pressure
290 psig (20 bar)
Operating temperature:
-40° to 175°F (-40° to 80°C) *
* Air supply must be dry enough to
avoid ice formation at temperatures
below 35°F (2°C).
Typical relief differential at 30
psig (2 bar) outlet pressure:
2.3 psig (0.16 bar)
Maximum bleed flow at 30 psig
(2 bar) outlet pressure (relieving
types only):
0.003 scfm (1.5 cm3/s)†
† Maximum bleed rate occurs
under dead-end (no flow)
conditions.
Gauge ports:
1/4 NPT
Materials
Body: aluminum
Bonnet: aluminum
Adjusting screw: steel
Elastomeric materials: nitrile
Technical data
R38 Instrument Regulator
and B38 Filter/Regulator
Aluminum Model ¼" Port Size
R38
B38
Compact instrument units with high performance
Stable regulation with temperature compensation
Excellent flow and regulation characteristics
Panel Mounting facility
Ordering information
Models listed are relieving type with 3.6 to 100 psig (0.25 to 7 bar) outlet pressure adjustment range *, and PTF threads. A gauge is not included.
ISO Symbols Port Size Model Number Flow† scfm (dm3/s) Weight lbs (kg)
1/4" PTF R38-200-RNKA 17 (8) 1.06 (0.48)
1/4" PTF B38-200-B1KA 17 (8) 1.18 (0.54)
* 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.
† Typical flow with 100 psig (7 bar) inlet pressure, 15 psig (1 bar) set pressure and 1 psig (0.05 bar) droop from set.
B38 Filter Elements
B38-100A-5 5 µm
R38 B38
GrSym,F/R,Auto,Rel
