View cart “1 TB-591 Spray Gun” has been added to your 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 591-39 Fluid Connector $9.95 Add to cart 591-23 Replacement Fluid Needle Spring $5.95 Add to cart 591-01-1 Air Cap Clip $2.95 Add to cart 591-07 Platen $14.50 Add to cart