View cart “591-26A Air Valve Assy.” has been added to your cart. 591-41 Packing Screw$2.50 591-41 Packing Screw quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Packing Screw Related products 591-39 Fluid Connector $9.95 Add to cart 591-31A Air Inlet Assy. $9.95 Add to cart 1 TB-591 Spray Gun $175.00 Add to cart 591-44 Stud $3.50 Add to cart