Norgren B74G Series Installation Instructions - Manual (Page 2)

ASSEMBLY
1. Lubricate the following items with o-ring grease.
4 (Thrust washer) - outer circumference and both sides.
5, 7 (Adjusting screw) - threads and tip.
18, 28 (Manual drain body) - the portion of the body
that contacts the bowl, and the hole that
accommodates the stem of drain valve (19, 29).
56 (Valve) - stem.
26, 38, 43, 49, 54, 57 (O-rings)
2. Assemble the unit as shown on the exploded view. Push
bowl, or bowl with guard, into body and turn fully
clockwise.
3. Torque Table
Item Torque in Nm (Inch-Pounds)
2, 10 (Screw) 2,3 to 3,9 (20 to 35)
22, 32 (Nut) 2,3 to 2,8 (20 to 25)
34, 45 (Screw) 1,7 to 2,3 (15 to 20)
53 (Center-post) 2,0 to 2,7 (18 to 24)
50
34
35
36
39
37
38
33
28
31
30
29
32
27
Current Metal Bowl
40
Early Plastic Bowl Early Metal Bowl
44
49
Current Plastic Bowl
17
26
25
24
23
21
18
20
19
22
45
46
48
47
42
41
43
6
1
3
2
4
5
7
8
9
11
10
12
13
16
14
15
56
57
55
53
52
51
54
Used on
models
prior to
1998
© Norgren 1998
B74G
Installation & Maintenance
Instructions
CAUTION
Water vapor will pass through these units and could
condense into liquid form downstream as air temperature
drops. Install an air dryer if water condensation could have
a detrimental effect on the application.
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 filter/regulator
pressure setting could cause downstream equipment to
rupture or malfunction, install a pressure relief device
downstream of the filter/regulator. The relief pressure and
flow 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 fluids other than air,
for non industrial applications, or for life-support systems
consult Norgren.
a subsidiary of IMI plc
IM-200.300.02 (9/98)
Supersedes 4/98