View cart “591-42 Retaining Ring” has been added to your cart. 591-08 Side Port Control$12.95 591-08 Side Port Control quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Side Port Control Related products 591-32 Air Connector $9.95 Add to cart 591-39 Fluid Connector $9.95 Add to cart 1 TB-591 Spray Gun $175.00 Add to cart 591-06 Lock Screw $12.50 Add to cart