View cart “591-26A Air Valve Assy.” 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 1 TB-591 Spray Gun $175.00 Add to cart 591-42 Retaining Ring $3.50 Add to cart 591-40 Packing $3.50 Add to cart 591-05 Air Ring $5.50 Add to cart