The Downstream Housing, part number CA-034-110, is on the right in the image and is available for use on the LSP Demand Valves which are supplied by Frontier Medical as a component of the LSP Entonox and Frodive Systems.

The Exhalation Valve, part number CA-034-111, is on the left in the image and is available for use on the LSP Demand Valves which are supplied by Frontier Medical as a component of the LSP Entonox and Frodive Systems.