Ordering Description Product number Description: EST4-125-024 EDGE Series Pipeline-Station Regulator- Oxygen Product number: 0781-5193 Description: EST4-15-025 EDGE Series Pipeline-Station Regulator- Acetylene Product number: 0781-5194 Description: EST4-125-034 EDGE Series Pipeline-Station Regulator- Inert (Nitrogen, Argon, Helium) Product number: 0781-5189 Description: EST4-40-024 EDGE Series Pipeline-Station Regulator- Oxygen Product number: 0781-5191 Description: EST4-80-024 EDGE Series Pipeline-Station Regulator- Oxygen Product number: 0781-5192 Description: EST4-80-025 EDGE Series Pipeline-Station Regulator- Hydrogen, Methane, Natural Gas, LP Gas Product number: 0781-5195 Description: EST4-125-025 EDGE Series Pipeline-Station Regulator- Hydrogen, Methane, Natural Gas, LP Gas Product number: 0781-5196 Description: EST4-40-024R EDGE Series Pipeline-Station Regulator- Oxygen Product number: 0781-5204 Description: EST4-80-024R EDGE Series Pipeline-Station Regulator- Oxygen Product number: 0781-5205 Description: EST4-125-024R EDGE Series Pipeline-Station Regulator- Oxygen Product number: 0781-5206 Description: EST4-125-034R EDGE Series Pipeline-Station Regulator- Inert (Nitrogen, Argon, Helium) Product number: 0781-5207 Description: EST4-15-025R EDGE Series Pipeline-Station Regulator- Acetylene Product number: 0781-5209 Description: EST4-80-025R EDGE Series Pipeline-Station Regulator- Hydrogen, Methane, Natural Gas, LP Gas Product number: 0781-5212 Description: EST4-125-025R EDGE Series Pipeline-Station Regulator- Hydrogen, Methane, Natural Gas, LP Gas Product number: 0781-5213