• Remove #3 Low Lift Check valve (30" Series 6000 APCO) • Supply and install one (1) new 30" APCO Series 6000 Check valve or pre-approved as equal. Contractors must supply cut sheets and valve specifications. • Air Cushioned Check Valves to be APCO model CVS-6000-AC (Series 6000), as manufactured by Dezurik, Inc. or pre-approved as equal. • Contractor must be certified Belzona coatings installer in New Jersey and coat new check valve for added longevity with pre - approved Belzona coating. • Contractor to own and operate required 15-ton crane, operator and trucking equipment for this work. - Air Cushion shall be totally enclosed. The cylinder shall have an anodized aluminum alloy cap, head and barrel. The bottom cylinder head shall be hinged mounted to follow the change of angular force as the lever rises and lowers. The primary closing speed of the air cushion cylinder is to be field adjustable by means of a color-coded micrometer type control valve. The secondary closing speed adjustment is performed by the flow control cylinder set screw. Control valve to have a set screw lock to secure final setting accuracy.
