When many burners or appliances operate simultaneously on a common network, total flow increases and the network may experience a greater pressure drop.
Total demand
The maximum potential flow is not always the output of a single device but the sum of the consumption of those that can operate simultaneously.
Symptoms of an inadequate network
A device may operate normally on its own and show low pressure when a second one starts.
Where the limitation may lie
The meter, regulator, filter, or main piping may be the actual bottleneck.
Proper assessment
Pressures should be recorded while the system is at actual maximum or representative load.
