“591-24A Replacement Needle Bushing Assembly” has been added to your cart. View cart 🔍 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 591-24A Replacement Needle Bushing Assembly $29.95 Add to cart 591-06 Lock Screw $12.50 Add to cart 591-40 Packing $3.50 Add to cart 591-39 Fluid Connector $9.95 Add to cart