View cart “591-39 Fluid Connector” has been added to your cart. 591-23 Replacement Fluid Needle Spring$5.95 591-23 Replacement Fluid Needle Spring quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Fluid Needle Spring Related products 591-26A Air Valve Assy. $19.95 Add to cart 591-44 Stud $3.50 Add to cart 591-42 Retaining Ring $3.50 Add to cart 591-39 Fluid Connector $9.95 Add to cart