View cart “591-24A Replacement Needle Bushing Assembly” has been added to your 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 591-01-1 Air Cap Clip $2.95 Add to cart 591-41 Packing Screw $2.50 Add to cart 591-09 O Ring $4.50 Add to cart 591-07 Platen $14.50 Add to cart