“591-26A Air Valve Assy.” has been added to your cart. View cart 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 591-14A Air Bushing Assy. $36.95 Add to cart 1 TB-591 Spray Gun $175.00 Add to cart 591-26A Air Valve Assy. $19.95 Add to cart 591-09 O Ring $4.50 Add to cart