IMI NORGREN B38 Installation & Maintenance Instructions

Port
2 1/4"
Material
0....Aluminum with Nitrile elastomers
Port Material Mounting Options
2 1/4" 0 Aluminium with Nitrle 0 None
elastomers 1 Bracket and nut
2 Nut only
* 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.
3 Handwheel and nut
4 Handwheel with bracket and nut

Technical Data

5 Handwheel
Fluid: Compressed air
Maximum pressure:
Aluminium: 20 bar (300 psig)
* Outlet pressure can be adjusted to pressures in excess of, and less than, those specified. Do not use these units to control pressures Operating temperature*:
outside of the specified ranges. -40° ... +80°C (-40° ... +176°F)
* Air supply must be dry enough to avoid ice formati-
on at temperatures below +2°C (+35°F).
TECHNICAL DATA
Particle removal: 5 μm or 25 μm filter element
Fluid: Compressed air
Air quality: Within ISO 8573-1, Class 3 and Class 5
Maximum pressure:
(particulates)
Aluminium: 20 bar (290 psig)
Typical flow with 7 bar (100 psig) inlet pressure,
Operating temperature*: -40° ... +80°C
1 bar (15 psig) set pressure and 0,05 bar (1 psig)
(-40° ... +176°F)*
droop from set: 8 dm3/s (17 scfm)
* Air supply must be dry enough to avoid ice formation at
Gauge ports:
temperatures below +2°C (+36°F).
1⁄4" as per main ports
Particle removal: 5 μm or 25 μm filter element
Materials:
Air quality: Within ISO 8573-1, Class 3 and Class 5 (particulates)
Body: Aluminium
Typical flow with 7 bar (102 psig) inlet pressure, 1 bar (14,5 psig)
Bonnet: Aluminium
set pressure and 0,05 bar (0,7 psig) drop from set: 8 dm3/s (17
Bowl: Aluminium
scfm)
Adjusting screw: steel
Gauge ports: 1⁄4" as per main ports
Element
Materials:
5 μm: Stainless steel
Body: Aluminium
25 μm: Vyon
Bonnet: Aluminium
Bowl: Aluminium Elastomers: Synthetic rubber
Adjusting screw: steel
Diaphragm: Nitrile
Element
Valve seat: Stainless steel
5 μm: Stainless steel
Valve spring: Stainless steel
25 μm: Vyon
Valve: Nitrile
Elastomers: Synthetic rubber
Valve cap: Aluminium
Diaphragm: Nitrile

Replacement items (standard option)

Valve seat: Stainless steel
Service Kit (includes items circled on exploded view):
Valve spring: Stainless steel
Relieving
Valve: Nitrile
2 bar
Valve cap: Aluminium
4 & 7 bar
Non relieving
REPLACEMENT ITEMS
2 bar
Service Kit (includes items circled on exploded view):
4 & 7 bar
Relieving
Filter section
2 bar R38-100R
5 μm aluminium
4 & 7 bar R38-101R
25 μm aluminium
Non relieving
2 bar R38-100NR

Panel Mounting Dimensions

4 & 7 bar R38-101NR
Panel mounting hole diameter: 42 mm (1,65")
Filter section
Panel thickness: 0 ... 6 mm (0" ... 0,24")
5 μm aluminium B38-100A-5

Installation

25 μm aluminium B38-100A-25
1. Shut off air pressure. Install filter/regulator in air
line -
PANEL MOUNTING DIMENSIONS
• vertically (bowl down),
Panel mounting hole diameter: 41 mm (1.61")
• with air flow in direction of arrow on body,
Maximum panel thickness: 0 ... 6 mm (0 ... 0.24")
• upstream of lubricators and cycling valves,
INSTALLATION • as close as possible to the device being serviced.
1. Shut off air pressure. Install filter/regulator in air line 2. Connect piping to proper ports using pipe thread
• vertically (bowl down),
sealant on male threads only. Do not allow sealant
• with air flow in direction of arrow on body.
to enter interior of unit.
• upstream of lubricators and cycling valves,
3. Install a pressure gauge or plug the gauge ports.
• as close as possible to the device being serviced.
Gauge ports can also be used as additional outlets
for regulated air.
2. Connect piping to proper ports using pipe thread sealant on

Adjustment

male threads only. Do not allow sealant to enter interior of
1. Before applying inlet pressure to filter/regulator,
unit.
turn adjustment (2) counterclockwise to remove
3. Install a pressure gauge or plug the gauge ports. Gauge ports
all force on regulating spring (7).
can also be used as additional outlets for regulated air.
2. Apply inlet pressure, then turn adjustment (2)
clockwise to increase and counterclockwise to
ADJUSTMENT
decrease outlet pressure setting.
1. Before applying inlet pressure to filter/regulator, turn
3. Always approach the desired pressure from a
adjustment (2) counterclockwise to remove all force on
regulating spring (7). lower pressure. When reducing from a higher
2. Apply inlet pressure, then turn adjustment (2) clockwise to to a lower setting, first reduce to some pressure
less than that desired, then bring up to the desired
pressure.
1/14
1999-IM8149b
Aluminum instrument filter/regulator
B38 – ˙˙˙ – ˙˙˙˙
Aluminium
Precision Filter/Regulator
Mounting Options
0 None
B38 - HHH - HHHH
1 Bracket and nut
2 Nut only
3 Handwheel and nut
4 Handwheel with bracket and nut
5 Handwheel
NOTE
With non-relieving filter/regulators, make pressure
reductions with some air flow in the system. If
made under no flow (dead-end) conditions, the
filter/regulator will trap the over-pressure in the
downstream line.
4. Once required pressure is achieved tighten
locknut (3) to lock setting.
increase and counterclockwise to decrease outlet pressure

Servicing

setting.
1. Regularly open drain to expel accumulated
3. Always approach the desired pressure from a lower
liquids.Keep liquids below element retainer (13).
pressure. When reducing from a higher to a lower setting,
2. At approximately 6 month intervals it is advisable
first reduce to some pressure less than that desired, then
to remove the bowl assembly by removing the
bring up to the desired pressure.
securing screws (4) and unscrewing the element
retainer (13) to remove the element (15) for
NOTE
inspection. Since the direction of air flow is from
With non-relieving filter/regulators, make pressure reductions
the inside of the element to the outside, a clean
with some air flow in the system. If made under no flow
exterior is not an an indication of freedom from
(dead-end) conditions, the filter/regulator will trap the over-
contamination. If the filter element shows
pressure in the downstream line.
evidence of blockage, replace with new element.
4. Once required pressure is achieved tighten locknut (3) to
Clean the element retainer (13) and the upper and
lock setting.
lower gaskets (14) befor replacing the filter
SERVICING element – avoiding excessive overtightening of the
1. Regularly open drain to expel accumulated liquids.Keep retainer. Inspect the bowl O-ring (16) for damage
liquids below element retainer (13). and renew if necessary.
2. t approximately 6 month intervals it is advisable to remove 3. Clean or replace filter element when dirty.

Disassembly

the bowl assembly by removing the securing screws (4) and
unscrewing the element retainer (13) to remove the element
1. Filter/regulator can be disassembled without
(15) for inspection. Since the direction of air flow is from
removal from air line.
the inside of the element to the outside, a clean exterior is
2. Shut off inlet pressure. Reduce pressure in inlet
not an an indication of freedom from contamination. If the
and outlet lines to zero.
filter element shows evidence of blockage, replace with
3. Turn adjustment screw fully counterclockwise.
new element. Clean the element retainer (13) and the upper
4. Disassemble in general accordance with the item
and lower gaskets (14) befor replacing the filter element –
R38-100R numbers on exploded view. Do not remove the
avoiding excessive overtightening of the retainer. Inspect the
drains unless replacement is necessary. Remove
R38-101R
bowl O-ring (16) for damage and renew if necessary.
and replace drains only if they malfunction.
4383-501
3. Clean or replace filter element when dirty.

Cleaning

R38-100NR
R38-101NR 1. Rinse and dry parts. Blow out internal passages in
DISASSEMBLY
body (22) with clean, dry compressed air. Blow air
1. Filter/regulator can be disassembled without removal from
through filter element (15) from inside to outside
B38100A(5)
air line.
to remove surface contaminants.
B38100A(25)
2. Shut off inlet pressure. Reduce pressure in inlet and outlet
2. Inspect parts. Replace those found to be
lines to zero.
damaged.
3. Turn adjustment screw fully counterclockwise.

Assembly

4. Disassemble in general accordance with the item numbers
1. Lubricate threads and nose of adjusting screw (2)
on exploded view. Do not remove the drain unless
at regular intervals with suitable grease eg.
replacement is necessary. Remove and replace drain only if
Speerol APT2.
it malfunctions.
2. Lubricate seals (16, 23, 26) with light coat of good
quality grease.
CLEANING
2. Assemble the unit as shown on the exploded view.
1. Rinse and dry parts. Blow out internal passages in body
3. Torque Table
(22) with clean, dry compressed air. Blow air through filter
Item
element (15) from inside to outside to remove surface
contaminants.
4 (screws, aluminium model)
2. Inspect parts. Replace those found to be damaged.
24 (valve cap, aluminium model)
ASSEMBLY
1. Lubricate threads and nose of adjusting screw (2) at regular
intervals with suitable grease eg. Speerol APT2.
2. Lubricate seals (16, 23, 26) with light coat of good quality
grease.
3. Assemble the unit as shown on the exploded view.
4. Torque Table
Item
4 (screws, aluminiuml model)
24 (valve cap, aluminium model) 8 (72)
Our policy is one of continued research and development. We therefore reserve the right to amend, without notice,
the specifications given in this document. © 2014 IMI International s.r.o.
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. © 2014 IMI International s.r.o.
B38
Element
Drain
1....5 μm
B....Manual
2....25 μm
Drain Element
B Manual 1 5 μm
2 25 μm
Torque in
Nm (Inch-Pounds)
3,3 (30)
8 (72)
Torque In
Nm (Inch-Pounds)
3,3 (30)
Installation & Maintenance
Instructions
Thread Form
A PTF
B ISO Rc taper
D ISO G
K API
Spring (Outlet Pressure Range) *
C 0,04 ... 2 bar (0.6 ... 30 psig)
F 0,07 ... 4 bar (1 ... 60 psig)
Spring (Outlet Pressure Range) * Thread Form
K 0,25 ... 7 bar (3,6 ... 100 psig)
C 0,04 ... 2 bar (0,6 ... 29 psig) A PTF
F 0,07 ... 4 bar (1 ... 58 psig) B ISO Rc taper
K 0,25 ... 7 bar (3,6 ... 102 psig) D ISO G
K API
1
2
3
4
5
6
7
8
23
29
22
26
25
27
28
24
16
14
15
14
13
9
4
N/IM/en 8.446.305.01
1999-IM8149b (1/14)
N/IM/en 8.446.305.01