Commercial catering gas appliance hoses. Gas hoses must be installed in accordance with BS6173 : 2001. These durable, corrosion-resistant stainless steel non-moveable gas connector is designed with safety in mind and is a CSA approved gas connector. They are composed of a 304 stainless steel corrugated tube and coated with an antimicrobial PVC coating that inhibits growth of bacteria, mold and mildew on the connector. These connectors are designed for the connection of high BTU gas cooking appliances used in restaurants.