DB-200-6
53
Size
Case A
Case B
M16
150 Nm
98 Nm
M18
136 Nm
M20
220 Nm
175 Nm
Case A: Screws without flat gasket, property class 8.8
Case B: Screws with flat gasket, property class 5.6
Plugs without gasket
Size
Steel
1/8-27 NPTF
15 .. 20 Nm
1/4-18 NPTF
30 .. 35 Nm
3/8-18 NPTF
50 .. 55 Nm
1/2-14 NPTF
60 .. 65 Nm
3/4-14 NPTF
80 .. 85 Nm
Wrap thread with sealing tape before mounting.
Sealing nuts with O-ring
Thread
AF
3/4-16 UNF
22
50 Nm
1-14 UNS
30
85 Nm
1 1/4-12 UNF
36
105 Nm
1 3/4-12 UN
50
150 Nm
2 1/4-12 UN
65
180 Nm
AF: width across flats in mm
Set screw A2 and nut .8 at reversing cover with
elastomer gasket
Size
M10
22 Nm
M16
60 Nm
Pipelines at coolant connections
Size
G1/2
40 Nm
G3/4
60 Nm
G1
80 Nm
G1 1/4
90 Nm
G1 1/2
150 Nm
G2
150 Nm
Internal thread at connection nipple
9.3
Sight glasses
Also mind when mounting or replacing:
▶ Tighten sight glasses only with calibrated torque
spanner to indicated torque.
▶ Do not use a pneumatic impact wrench.
▶ Tighten flanges of sight glasses in several steps to
indicated torque.
▶ Check sight glass visually in detail before and after
mounting.
▶ Test changed component for tightness.
Sight glasses with sealing flange
Screw size
M8
14 Nm
M10
18 Nm
Sight glasses with union nut
Size
AF
1 3/4-12 UN
50
150 Nm ①
2 1/4-12 UN
65
180 Nm
①: also prism unit of OLC-D1
AF: width across flats in mm
Screwed sight glass
Size
AF
1 1/8-18 UNEF
36
50 Nm ②
②:
also p
rism unit of OLC-D1-S