Poly Processing Company products

Seamless, one-piece construction. External fitting access. IMFO system eliminates need for confined space entry, prevents sludge buildup, and provides complete drainage.

This one-piece sure-seal fitting prevents leaks and adds value to your tank installation. Available in PVC and CPVC back ring, its one-piece design reduces the seal point to a single gasket, and its polyethylene construction ensures chemical compatibility. Its back ring design reduces stress on the fitting and makes it three times stronger than similar plastic fittings.

A secure yet flexible, fully contained SAFE-Tank bottom discharge. By incorporating an expansion joint, the tank expands freely during loading and unloading, and it virtually eliminates damage from piping vibrations caused by pumps. The pressure-tested internal components of the fitting come to you pre-assembled and ready to install.

Available in PVC and CPVC. With these fittings, all aspects of fitting maintenance can be done externally, with no tank entry required. These can be installed on sidewall or dome. Bolt heads are encapsulated in polyethylene, providing chemical resistance.

The Bolted Spool Fitting is fabricated per the customer’s requirements and is typically used for larger dome and sidewall connections. Use a Van Stone flange to connect piping. Bolted Spool Fittings 8 inches or greater are manufactured with gussets.

An economical fitting best used on small tanks in mild applications. Can be installed on sidewall, overflow or dome. May be used as a overflow fitting with all chemicals, since it’s non-wetted.  Bulkhead Fittings must be installed from the inside of the tank, requiring tank entry for repairs and maintenance. They should not be used on the bottom sidewall of tanks greater than 3,000 gallons or tanks greater than 6 feet in height.

These flanges are “self-aligning,” which allows for vertical plumbing on the dome of the tank up to 22 degrees. The fitting can be repaired and maintained externally without tank entry. Available with Ryton® bolts, an economical alternative to titanium, C-276, and Alloy 400.

Our Universal Ball Dome Bulkheads are also “self-aligning,” which allows for vertical plumbing on the dome of the tank. An economical alternative to UBD flange-style bulkheads, since no additional bolts are required.

Made-Vertical Fittings are fabricated per the customer’s requirements. They are typically used for larger domes that require a fitting to be above 4 inches and in those few cases where our domes are extremely steep. They may need to be supported independently of the tank. For optimal support, install it on a tank runway or as close to the edge as possible.

Includes a nipple and flange for connection to plumbing system.