591-31A Air Inlet Assy.$9.95 591-31A Air Inlet Assy. quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Air Inlet Assembly Related products 591-09 O Ring $4.50 Add to cart 591-14A Air Bushing Assy. $36.95 Add to cart 591-44 Stud $3.50 Add to cart 591-03 Fluid Nozzle $29.95 Add to cart