591-26A Air Valve Assy.$19.95 591-26A Air Valve Assy. quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Air Valve Assembly Related products 591-31A Air Inlet Assy. $9.95 Add to cart 591-03 Fluid Nozzle $29.95 Add to cart 591-14A Air Bushing Assy. $36.95 Add to cart 591-43 Trigger $6.50 Add to cart