Norgren B68 Series Installation and operating instructions

01/22
I&M/en 8.260.300.01
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. (1999 - I&M8093d) © 2020 IMI International s.r.o.
B68G, B68E Filter/Regulator
Installation & Maintenance Instructions
Fluid: Compressed air
Maximum pressure:
17 bar (250 psig)
Operating temperature*:
–20° ... +80°C (0° ... +175°F)
* Air supply must be dry enough to avoid ice
formation at temperatures below +2°C (+35°F).
Particle removal: 5 µm, 25 µm or 40 µm lter element
Air quality: Within ISO 8573-1, Class 3 and Class 5
(particulates)
Typical ow at 10 bar (150 psig) inlet pressure,
6,3 bar (90 psig) set pressure and a droop of 1 bar (15
psig) from set: 240 dm3/s (509 scfm)
1/4 turn manual drain connection: 1/8“ pipe thread
Automatic drain connection: 1/8“ pipe thread
Automatic drain operating conditions:
Bowl pressure required to close drain:
Greater than 0,3 bar (5 psig)
Bowl pressure required to open drain:
Less than 0,2 bar (3 psig)
Minimum air ow required to close drain:
1 dm3/s (2 scfm)
Manual operation: Depress pin inside drain outlet to
drain bowl
Nominal bowl size:
0,5 litre (1 pint U.S.), 1 litre (1 quart U.S.)
Gauge ports:
1/8 PTF with PTF yoke ports
Rc1/8 with ISO Rc yoke ports
Rc1/8 with ISO G yoke ports
Materials:
Body: Aluminium
Yoke: Aluminium
Bonnet: Aluminium
Adjusting knob: Acetal resin
Optional T-bar adjusting screw: Steel
Valve: Aluminium
Bowl: Aluminium
Sight glass: Pyrex
Element: Sintered bronze or polypropylene
Elastomers: Synthetic rubber
REPLACEMENT ITEMS
Service kit (items circled on exploded view)
Relieving 4383-300
Nonrelieving 4383-301
0.5 litre bowl liquid level lens
(19 thru 27) 4380-060
1 litre bowl liquid level lens
(30 thru 38) 4380-061
Filter element, 0.5 litre bowl, 5 µm
(54, 55, 56) 5576-97
Filter element, 0.5 litre bowl, 25 µm
(54, 55, 56 ) 5576-98
Filter element, 0.5 litre bowl, 40 µm
(54, 55, 56) 5576-99
Filter element, 1 litre bowl, 5 µm (55) 5311-01
Filter element, 1 litre bowl, 25 µm (55) 5311-02
Filter element, 1 litre bowl, 40 µm (55) 5311-03
Automatic drain, G1/8 outlet (49) 3000-97
Automatic drain, 1/8 PTF outlet (49) 3000-10
Manual drain, spindle type (44) 684-84
Manual drain, 1/4 turn (40) 619-50
Tamper resistant cover and wire 4355-51
INSTALLATION
1. Install unit vertically in air line -
• with air ow in direction of arrow on top of yoke,
• upstream of lubricators and cycling valves,
• as close as possible to the device being serviced.
2. Connect piping to yoke ports using pipe
thread sealant on male threads only.
3. Install a pressure gauge in regulator or plug
gauge ports. Gauge ports can also be used as
additional outlets for regulated air.
4. Lubricate o-rings (15) with a light coat of
o-ring grease, then place o-rings in grooves in
body (14).
5. Place clamp ring under lugs on top of yoke.
6. Make sure arrows on yoke and regulator point
in same direction, then plug regulator into
yoke and tighten clamp ring hand tight.
7. Turn bowl into body until arrowhead on bowl
is aligned with or to the right of the arrowhead
on the body.
8. Flexible tube with 3mm (0.125”) minimum I.D.
can be connected to the automatic drain.
Avoid restrictions in the tube.
ADJUSTMENT
1. Before applying inlet pressure to
lter/regulator, turn adjustment (1 or 7)
counterclockwise to remove all force on
regulating spring (11).
2. Apply inlet pressure, then turn adjustment (1 or 7)
clockwise to increase and counterclockwise to
decrease pressure setting.
3. Always approach the desired pressure from
a lower pressure. When reducing from a
higher to a lower setting, rst reduce to some
pressure less than that desired, then bring up
to the desired pressure.
17
16
11
14
2
1
7
8
9
10
1
5
4
6
3
53
55
57
58
59
60
62
64
63
61
56
54
12
13
15
29
32
32
31
30
36
37
35
31
30
33
39
34
33
38
18
28
19
25
26
24
21
22
19
21
20
20
23
22
27
41
43
42
40
46
45
47
44
48
51
50
49
52
TECHNICAL FEATURES
* Outlet pressure can be adjusted to pressures in excess of, and less than, those specied.
Do not use these units to control pressures outside of the specied ranges. *1) Available only with T-bar adjustment.
Port
6 3/4“
8 1“
A 1-1/4“
B 1-1/2“
N No yoke
Adjustment
K Knob
T T-bar
Diaphragm
R Relieving
N Non relieving
Drain
A Automatic
E Closed bottom
M Manual, spindle type
Q Manual, 1/4 turn
Bowl
C 1 litre (1 quart U.S.)
No liquid indicator
M 0,5 litre (1 pint U.S.)
No liquid indicator
R 0,5 litre (1 pint U.S.)
With liquid indicator
U 1 litre (1 quart U.S.)
With liquid indicator
Element
1 5 µm
2 25 µm
3 40 µm
Thread
A PTF
B ISO Rc tapered
G ISO G parallel
N No yoke (N in 5th position) Rc gauge ports.
A No yoke (N in 5th position) PTF gauge ports
Spring (Outlet pressure range) *
F 0,3 ... 4 bar (5 ... 60 psig)
L 0,4 ... 8 bar (5 ... 120 psig)
S*1) 0,7 ... 17 bar (10 ... 250 psig)
Gauge
G With
N Without
B68˙– ˙˙˙ – ˙˙˙ – ˙˙˙
Bowl/
Element
E Long
G Short
Option selector

I&M/en 8.260.300.02
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. (1999 - I&M8093d) © 2020 IMI International s.r.o.
B68G, B68E Filter/Regulator
Installation & Maintenance Instructions
01/22
NOTE
With non-relieving lter/regulators, make
pressure reductions with some air ow in the system.
If made under no ow (dead-end)
conditions, the lter/regulator will trap the over-pres-
sure in the downstream line.
4. Knob Adjustment. Push knob toward body
to lock pressure setting. Pull knob away from
body to release. Install tamper resistant cover
and wire (see Replacement Items) to make
setting tamper resistant.
5. T-bar Adjustment. Tighten lock nut (8) lock
pressure setting.
SERVICING
1. Open manual drain to expel accumulated
liquids. Keep liquids below bafe (53).
2. Clean or replace lter element when dirty.
DIASSEMBLY
1. Shut off inlet pressure. Reduce pressure in
inlet and outlet lines to zero.
2. Turn adjustment (1 or 7) fully counterclock wise.
3. Unscrew clamp ring and remove unit from yoke.
4. Disassemble in general accordance with
the item numbers on exploded view. Do
not remove the drains unless replacement
is necessary. Remove and replace only if they
malfunction.
CLEANING
1. Clean parts with warm water and soap.
2. Rinse and dry parts. Blow out internal
passages in body with clean, dry compressed
air. Blow air through lter element (55) from
inside to outside to remove surface
contaminants.
3. Inspect parts. Replace those found to be damaged.
ASSEMBLY
1. Lubricate o-rings, the portion manual drain
body (43) that contacts the bowl, and the hole
in the manual drain body that accommodates
the stem of drain valve (41) with o-ring grease.
2. Lubricate valve stem (62), adjusting screw
threads and tip (3, 7) and the recess of spring
rest (10) with a light coat of good quality
o-ring grease.
3. Lubricate bonnet threads (2, 9) with a small
amount of anti-seize compound.
4. Assemble the unit as shown on the exploded view.
5. Assemble the liquid indicator parts (19 thru
26, 30 thru 37) to reservoir. Apply a 0.9 to
1.8 kg (2 to 4 pound) clamping force to upper
and lower sight glass brackets (20, 31).
Tighten screws (19, 30).
6. Torque Table
Item Torque in Nm (Inch-Pounds)
2, 9 (Bonnet) 62 ... 68 (550 ... 600)
16 (Pipe plug) 3,3 ... 5,5 (29 ... 49)
19, 30 (Screw) 1,8 ... 2,3 (16 ... 20)
45, 50 (Nut) 0,8 ... 1,2 (7 ... 10)
53 (Bafe) 1,1 ... 1,4 10 ... 12)
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 Data.
Polycarbonate plastic bowls can be damaged and
possibly burst if exposed to such
substances as certain solvents, strong
alkalies, compressor oils containing ester-based
additives or synthetic oils. Fumes of these substances
in contact with the polycarbonate bowl, externally or
internally, can also result in damage. Clean with warm
water only.
Use metal bowl in applications where a plastic bowl
might be exposed to substances that are
incompatible with polycarbonate.
If outlet pressure in excess of the
lter/regulator pressure setting could cause down-
stream equipment to rupture or
malfunction, install a pressure relief device down-
stream of the lter/regulator. The relief pressure and
ow capacity of the relief device must satisfy system
requirements.
The accuracy of the indication of pressure
gauges can change, both during shipment
(despite care in packaging) and during the service life.
If a pressure gauge is to be used with these products
and if inaccurate indications may be hazardous to
personnel or property, the gauge should be calibrated
before initial
installation and at regular intervals during use.
Before using these products with uids other than
air, for non industrial applications, or for life-support
systems consult Norgren.
17
16
11
14
2
1
7
8
9
10
1
5
4
6
3
53
55
57
58
59
60
62
64
63
61
56
54
12
13
15
29
32
32
31
30
36
37
35
31
30
33
39
34
33
38
18
28
19
25
26
24
21
22
19
21
20
20
23
22
27
41
43
42
40
46
45
47
44
48
51
50
49
52