PIETRO FIORENTINI REVAL 182, Инструкция по эксплуатации и обслуживанию

Страница: 86 / 404

86
REV
AL 182
EN
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR | INSTALLATION | REV. 00
6.5 - INSTALLATION PROCEDURES
6.5.1 - EQUIPMENT INSTALLATION PROCEDURES
Step Action
1 Place the equipment in the section of the line designated for it.
2 Place the gaskets between the line flanges and the regulator flanges.
3 Insert the bolts into the appropriate holes of the connecting flanges.
4 Screw the bolts following the technical rules for tightening flanges.
Tab. 6.60.
NOTICE!
For installation after maintenance, replace the seals.
6.5.2 - CONNECTION OF THE SENSING LINES TO THE DOWNSTREAM PIPING
Fig. 6.29. Connection of sensing lines to the downstream piping
For proper adjustment, it is essential that:
• the downstream shut-off valve is placed at a distance of at least 6 times the nominal diameter of the pipe downstream
of the regulator;
• the downstream sensing lines are placed on a straight section of pipe (with uniform diameter) having a length equal to
at least 4 times the nominal diameter of the piping itself;
• the velocity of the pressurised fluid at the sampling point does not exceed the following values:
Vmax = 30 m/s for Pa > 5 bar
Vmax = 25 m/s for Pa < 5 bar