Poly Processing Company

Combination Internal & External Fill/Discharge Drop Pipes

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Fill Line assemblies are available in PVC and CPVC with sizes ranging from 1 to 3 inches and include a true union for quick assembly. When choosing a fitting, be sure to consider if the fill will be placed on the flat of the dome; otherwise it will require a self-leveling fitting.

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For dome fittings installed +/- 12 inches from the sidewall, standard pipe supports can be used. If the dome fitting is more than 12 inches from the sidewall or if the fitting size is greater than 4 inches, you must use a non-invasive internal pipe support (our “promo tank”) to support the internal piping.

Customer installation of the internal drop pipe assembly is required. Use a universal ball dome fitting for easier installation. Please note, it is recommended that one pipe support be used for every 6 feet of sidewall height to maintain alignment.

Optional fittings: ball valve, quick adapter and cap and 45°elbow as shown