Norgren B68G Installation & Maintenance Instructions

Bowl/Element Port Thread Form
E ...Long bowl 6 ...3/4" A...PTF
and element 8 ...1" B...ISO R c tapered
G...Short bowl A...1-1/4" G ..ISO G parallel
and element B...1-1/2" N ..No yoke (N in 5th position)
N ..No yoke Rc gauge ports.
A...No yoke (N in 5th position)
PTF gauge ports.
* 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.
† Available only with T-bar adjustment.
TECHNICAL DATA
Fluid: Compressed air
Maximum pressure: 17 bar (250 psig)
Operating temperature*: -20° to +80°C (0° to +175°F)
* Air supply must be dry enough to avoid ice formation at
temperatures below +2°C (+35°F).
Partical removal: 5, 25 or 40 µm
Air quality: Within ISO 8573-1, Class 3 and Class 5
(particulates)
Typical flow 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 dm 3/ s (509 scfm)
1/4 turn manual drain connection: 1/8" pipe thread
Automatic drain connection: 1/8" pipe thread
Automatic drain operating conditions (float operated):
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 flow required to close drain: 1 dm 3 /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
© Norgren 2001
a subsidiary of IMI plc
Filter/Regulator
B68# - ### - ### - ###
Adjustment Drain Bowl
K...Knob A ...Automatic C...1 litre (1 quart U.S.)
E ...Closed bottom
T ...T-bar
M ..Manual, spindle M..0,5 litre (1 pint U.S.)
type
Q...Manual, R...0,5 litre (1 pint U.S.)
1/4 turn
U...1 litre (1 quart U.S.)
INSTALLATION
1. Install yoke in air line -
with air flow in direction of arrow on top of yoke,
G
upstream of lubricators and cycling valves,
G
as close as possible to the device being served.
G
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 filter/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, first reduce to some pressure less than that
desired, then bring up to the desired pressure.
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. 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 baffle (53).
2. Clean or replace filter element when dirty.
DISASSEMBLY
1. Shut off inlet pressure. Reduce pressure in inlet and
outlet lines to zero.
2. Turn adjustment (1 or 7) fully counterclockwise.
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 filter
element (55) from inside to outside to remove surface
contaminants.
3. Inspect parts. Replace those found to be damaged.
Installation & Maintenance
Element
1 ...5 µm
No liquid indicator
2 ...25 µm
3 ...40 µm
No liquid indicator
Diaphragm
N...Non-relieving
With liquid indicator
R...Relieving
With liquid indicator
1
1
2
5
3
4
6
11
12
13
7
8
9
10
18
20 21
19
22
24
25
26
22
23
20
21
19
40
43
42
41
B68G, B68E
Instructions
Spring (Outlet Pressure Range)*
F ...0,3 to 4 bar (5 to 60 psig)
L ...0,4 to 8 bar (5 to 120 psig)
S...0,7 to 17 bar (10 to 250 psig)†
Gauge
G ..With
N ..Without
14 15
16
17
63
62
64
61
60
59
58
57
56
55
54
53
29
38
32
27
31
30
33
35
36
37
28
33
34
31
39
32
30
44
49
47 51
48
52
45
50
46
IM-260.300.01 (6/01)