Operation and commissioning
Deltatop DP71B, DP72B, DP73B
38
Hauser
5.3
Use of accessories
5.3.1
Shut-off valves
Usage
Shut-off valves are used with remote versions for high-pressure and high-temperature applications.
They are used as a primary shut-off for the measuring point.
Depending on national regulations, primary shut-off with two shut-off valves per impulse pipe may
be recommended or required.
Operating principle
The primary shut-off provides separation close to the process between the measuring system and
the measuring pipe in the event of leakage or if maintenance measures are carried out at the impulse
pipes.
Installation and commissioning
Once installation has been completed, the shut-off valves must be closed. When starting
commissioning, the shut-off valves should be opened cautiously and the complete measuring system
should be checked for leakage.
