“591-26A Air Valve Assy.” has been added to your cart. View cart 591-20 Needle$19.95 591-20 Needle quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Fluid Needle Assembly Related products 591-43 Trigger $6.50 Add to cart 591-31A Air Inlet Assy. $9.95 Add to cart 1 TB-591 Spray Gun $175.00 Add to cart 591-14A Air Bushing Assy. $36.95 Add to cart