The CL 34 Series is designed to provide extremely accurate regulation of gas over a wide range of flows and outlet pressures. Typical applications include fixed factor billing on commercial and industrial installations. The CL34-1 features a low pressure relief-type pilot regulator for outlet pressures from Inches W.C. 5 PSIG. The CL34-2 features a high pressure relief-type pilot for outlet pressures from 1 to 60 psig.