Techrite Controls Australia...
The CL31 regulator can produce substantial savings for users in lower
initial costs, lower installation costs and lower maintenance costs.
Optimum valve design limits over boosting or rapid drop-off as the
capacity requirement changes, including fast on-off loads.
The CL31 was designed for systems requiring highly accurate pressure
regulation such as: utility Fixed Factor metering of relatively small
loads (up to 4000scfh)and industrial heating equipment requiring
constant high burner pressures (1 PSIG to 20 PSIG).