Hey guys need some help I have a two hundred gal tank it is propane it sets behind my garage it is used for our gas heater in our family room I have a wood stove in my garage I have a propane torpedo heater that I use when I don't want to build a fire The problem is I get tired of useing 20# tanks I have a black 1/2 inc pipe already run to my garage what I need is a fitting like what's on propane 20# tanks called lowes they don't understand what iam looking for my torpedo heater has a black hose the end of hose that goes in tank has male fitting with o ring I need a fitting that will screw on black pipe then screw heater hose in to fitting I don't no what fitting to buy are they left hand threads hope some one can show me a picture or fitting no Thanks for any help