- $37.99"National Union Gas and General Labourers, 1889" Vintage Advertisement on CanvasWayfair
- $320.70MegaPressG 1/2 in. Press x 1/2 in. FPT Carbon Steel Union (Gas Only) (5-Pack)The Home Depot
- $6.99Maxmoral 2pcs Brass Tube Fitting, Half Union Gas Adapter 3/8" Flare x 1/4" NPT Male Pipe ConnectorAmazon
- $10.99TAISHER Metals Brass 10PCS 1/4 Inch Flare x 1/4 Inch Flare Coupler Tube Fitting, Pipe Connector Union Gas AdapterAmazon
- $7.29SUNGATOR Tube Fitting 3/8 inch Flare x 3/8 inch Male NPT, Brass Half-Union Gas Adapter, 3/8'' Male Flare to 3/8'' NPT Propane Fittings, Brass Flare Tube Fitting for Propane (2-Pack)Amazon