Sprayer by G&A Equipment Company is a must have for every professional out there.
The G&A Sprayer comes with an Extend Ban valve which offers a positive tip shut-off for a drip free application of chemical

Hand-held pump sprayer Material/Construction
Stainless steel tank, brass/metal parts Pressure (PSI):
50 PSI Spray Pattern: Fine pin stream, fan spray, fine mist, or crack & crevice Tank Size:
Size: 1 gallon Hose Length (inches): 48 in.
Wand Length (inches): 9 in. Features: Removable carpet protector ring with spare parts storage insidering