Gas Pressure Regulator, Lever-Acting Line, Pipe Size 1/2 In, FNPT Connection, Max Inlet Pressure 2 PSI, Outlet Pressure Range 7-11 In WC, Inlet Emergency Exposure Limits 65 PSI, Ambient Temp Limits -40 To 205 F, Max Load 140, 000 Btu/hr, Capacity 250, 000 Btu/hr, Horizontal Upright Mounting Position, Venting 1/8 In NPT, Cu-Ft/Hr @ 03 30 In WC) Pressure Drop, Includes Vent Limiter, Standards CSA Designed Certified Z21.80 / CAN 6.22 Lever-Acting LineFor piping systems such as CSST (corrugated stainless steel) or semirigid copper tubing. 5JG86, 3MB99, 3ME10, and 5JC45 include automatic vent limiter. 3MB98, 3MB99, and 3ME10 include over-pressure protection device.Gas Pressure RegulatorsMade for natural, manufactured, mixed, LP, or LP gas-air mixtures. Corrosion-resistant aluminum alloy housings. External venting must be in accordance with government and plumbing codes and regulations. NPT connections.Ambient temp. range: -40 to 205 F (3UP35 and 4E226 are 32 to 225 F)