64
GOVERNORS NOR
TH AMERICA
64
GOVERNORS NOR
TH AMERICA
US
LOW PRESSURE GAS REGULATOR
|
INSTALLATION
|
REV. A
Operation, maintenance and warning manual
7.1.3 - CHECKS BEFORE INSTALLATION
In relation to its
design pressure (DP)
, the equipment does not require any additional upstream safety device to protect
against possible overpressure when, for the upstream reduction station, the maximum downstream incidental pressure
is:
MIPd ≤ 1.1 DP
MIPd =
maximum value of downstream incidental pressure (for more information see UNI EN
12186:2014).
Where the installation of the equipment requires the application of compression fittings in the field, these
must be installed according to the instructions of the manufacturer of the fittings.
The choice of fittings must be compatible with:
•
the specified use for the equipment;
•
plant specifications when foreseen.
Before proceeding with the installation you must make sure that:
• The direction of flow is adhered to as indicated on the equipment;
• At least one upstream shutoff valve is present;
• At least one downstream shutoff valve is present;
• the data on the identification plates affixed to the equipment (refer to section 2.8 of the manual) correspond to what
is required by or from the connected combustion appliances;
• the equipment has not been damaged during transport;
• the intended installation space meets current safety requirements and is protected from possible mechanical damage,
away from heat sources or open flames, in a dry place and protected from external agents;
• there are no impediments that may hinder installation operations;
• inlet and outlet pipes are at the same level and capable of bearing the weight of the equipment;
• on the inlet/outlet connections, mechanical stresses are totally absent;
• the pipe inlet/outlet connections are parallel, clean and undamaged;
• the inside of the upstream pipe is clean and free of processing residues such as welding slag, sand, paint residues,
water, etc….
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