Products for efficient, safe and environmentally conscious handling of HFCs, PFCs and hydrocarbon refrigerants Self-closing companion valves Copper refrigerant lines with companion valves Thermoplastic hoses with companion valves Elastomer hoses with companion valves Thermoplastic capillary tubing assembled and by the meter Thermoplastic hoses with solder and flare connections Elastomeric refrigerant hoses with solder and flare connections