Mountain Aire's Multi-Loc Fill Adaptors:

TWIN-LOC Handle with Relief Valve 100psi 1/4"

Ultimate • Customized • Efficient • Versatile
 All Components Sold Seperately

•    Save Time Changing Fill Heads
•    Designed for Dealers Servicing Multiple Top and Side Fill Units
•    Mix and Match Six Manufacturer's Fill Heads 
•    Relief Valve Port Built Into Our Adaptor
•    Eliminate the PUrchase of an Expensive Hose with Relief Valve and 
     Adaptor Port

See Adobe Acrobat file (Scroll down page for particular adaptor)