You can order the W131500 replacement tank for your Falcon Camp trailer directly from Elkhart RV Parts via this product link: https://elkhartrvparts.com/products/31-gallon-rv-water-tank-46-x-31-x-7-1-4-amerikart-w1315000. While custom spin weld fitting installation service is temporarily disabled, you can purchase the tank bare and add fittings yourself or use our available fittings from the fittings collection. For your application with three fittings (drain, supply, fill), consider using 1/4" flush spin weld fittings (SKU: 84I) if you plan to install them independently. The grommet kits create watertight seals by inserting flexible rubber grommets into pre-drilled holes, while spin weld fittings are permanently welded to polyethylene tanks for a leak-proof connection. Hole sizes for fittings correspond to the grommet dimensions, which are typically embossed or molded on the grommets; measuring the Uniseal side diameter will guide hole saw sizing. Use ElastiSeal B-100 sealer when inserting fittings and when installing pipes to ensure a secure, leak-free fit. PVC pipe is commonly used for these fittings, but PEX pipe can also be used if properly sealed. If you would like to discuss your order or custom installation, a sales representative can contact you directly to assist further.