Tightening the clasp nut, Figure 6, Sealing of fitting body into process – Vaisala MMT310 User Manual
Page 21: Table 4, Mmt318 pipe dimensions
Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 21
The following two fitting body options are available:
- Fitting Body ISO1/2 solid structure (DRW212076SP)
- Fitting Body NPT1/2 solid structure (NPTFITBODASP)
Table 4
MMT318 Pipe Dimensions
Type
Pipe Dimension
Adjustment Range
Standard
178 mm
120 mm
Optional
400 mm
340 mm
Use teflon tape or thread sealant to seal the connection between the
fitting body and the process/ball valve.
0507-025
Figure 6
Sealing of Fitting Body into Process
Tightening the Clasp Nut
1.
Adjust the probe to a suitable depth according to the type of
installation.
2.
Tighten the clasp nut first manually.
3.
Mark the fitting screw and the clasp nut.
4.
Tighten the nut a further 50 - 60º (ca. 1/6 turn) with a wrench. If
you have suitable torque wrench, tighten the nut to max 45 ± 5 Nm
(33 ± 4 ft-lbs).