Samson EB 20a, Mounting And Operating Instructions

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15-1
EB 20a_EN
May 2022 edition
Subject to technical changes
Annex
15 Annex
15.1 Tightening torques, lubricant and tools
15.1.1 Tightening torques
15.1.1.1 Body halves
When screwing the body sections together (1a and 1b), observe
the sequence of the screw connections and the tightening torques
for the respective nominal sizes.
Figure | 15-1: Sequence of the screw connections
Table | 15-1: Tightening torques for body connections
Nominal size Connection Tightening torque
DN 15 1 to 4 25 Nm
DN 25
1 to 6 25 Nm
7 to 8 35 Nm
NPS1 1 to 4 25 Nm
DN 40 / NPS1½
1 to 7 25 Nm
8 and 9 35 Nm
DN 50 / NPS2
1 to 7 25 Nm
8 and 9 30 Nm
DN 80 / NPS3
1 to 13 35 Nm
14 and 15 40 Nm
DN 100 / NPS4
1 to 14 35 Nm
15 and 16 45 Nm
DN 150 / NPS6
1 to 12 40 Nm
13 and 14 45 Nm
DN 200 / NPS8
1 to 14 50 Nm
15 and 16 60 Nm
When these instructions are followed correctly, the sealing when
the medium
fl ows through the control shaft as well as proper
function are ensured.
In
fl uences such as pressure, temperature, as well as the use of
other PTFE material can lead to a change in these assembly in-
structions.
15.1.1.2 Flange connections
Table | 15-2: Tightening torques for the DIN fl ange connections
DN
[mm]
25 40 50 80 100 150 200
MA
[Nm]
25 50 60 65 75 100 150
Table | 15-3: Tightening torques for the ANSI fl ange connections
NPS
[inch]
1 1½ 2 3 4 6 8
MA
[Nm]
15 30 40 65 50 80 120
Info