Endress+Hauser Levelflex FMP51 Operating Instructions Manual page 15

Levelflex FMP51, FMP52, FMP54
Seal
The thread as well as the type of seal comply to DIN 3852 Part 1, screwed plug form A.
They can be sealed with the following types of sealing rings:
• Thread G3/4": According to DIN 7603 with the dimensions 27 x 32 mm
• Thread G1-1/2": According to DIN 7603 with the dimensions 48 x 55 mm
Please use a sealing ring according to this standard in the form A, C or D and of a material that
is resistant to the application.
For the length of the screwed plug refer to the dimensional drawing:
• FMP51:
• FMP54:
6.2.2 Nozzle mounting with flange
For FMP52: Use spring washers in order to compensate a possible creep deformation of
the PTFE cladding between the tank and the device flange; see figure below.
Alternative: Retighten the flange bolts periodically, depending on process temperature and
pressure. Recommended torque: 60 to 100 Nm (44.3 to 73.7 lbf ft).
450 (18)
≤
mm (in)
1 Spring wahsers ensure sufficient preload between the tank and the flange of the FMP52.
Endress+Hauser
Ø < 150
mm (in)
( Ø < 6)
1
< 150
( 6) <
Mounting
A0015122
A0014652
15