Dresser Roots 5M Meter

5M175 Series Gas Meters are an accurate positive displacement rotary style gas meter. Additionally, one of the amazing features is a very low differential across the meter. This particular meter size is only available in 3 Inch 150# flange connection. Capacity is 5000 Cubic Feet Per Hour (2 Million BTU). A maximum line pressure of 175 PSI (notice that in the Model number). Operating temperatures are -40°F to +140°F (-40°C to +60°C). 

Moreover these meters are great for both indoor and outdoor applications. Another fantastic perk is there are no straight pipe requirements. However, it is strongly recommended that you install a Strainer as close to the meter inlet as possible to protect it from pipe debris.