Poly Processing
SAFE-Tank double-wall containment, crosslinked polyethylene (XLPE) construction, IMFO outlet fittings, and OR-1000 rupture protection — 30+ years, 100+ LibertyCES-specified projects, zero specification failures.
What LibertyCES specifies from Poly Processing

Double-wall secondary containment — the outer tank fully contains the inner tank's entire volume as one integrated system. Crosslinked polyethylene (XLPE) resists environmental stress cracking (ESCR).

Outlet flange molded as part of the tank wall — removes the seam that's typically the first leak point on a bottom-outlet tank, and a sloped-bottom IMFO tank fully drains.

Engineered to arrest a tank failure before it becomes an uncontrolled release — a documented protection layer beyond the tank's base pressure/stress rating.
Poly Processing — Real Catalog Spec Data
| Product Line | Model | Category | Material | Size / Capacity | Temp Rating |
|---|---|---|---|---|---|
| SAFE-Tank | double-wall containment tank | Storage Tank | cross-linked polyethylene (XLPE) | 55 to 10500 gal; min 110% secondary containment | n/a |
| Sloped Bottom Vertical Tanks with IMFO | Sloped Bottom Vertical Tanks with IMFO | Storage Tank | crosslinked polyethylene (XLPE) | 3950-15000 gal, full drain via sloped floor + IMFO outlet | n/a |
| Vertical Tanks with IMFO | Vertical Tanks with IMFO | Storage Tank | crosslinked polyethylene (XLPE) | 200-15500 gal, molded flange outlet, highest NPHS of non-coned vertical tanks | n/a |
| Vertical Tanks | Vertical Tanks | Storage Tank | crosslinked polyethylene (XLPE) | 30-15500 gal | n/a |
| Cone-Bottom Tanks | Cone-Bottom Tanks | Storage Tank | polyethylene | 55-10950 gal, 100% drain, addresses vortexing, needs steel stand/basket | n/a |
| Open-Top Tanks | Open-Top Tanks | Storage Tank | polyethylene | 50-14650 gal, for blending/containment, mixer bridge compatible | n/a |
| Secondary Containment Basins | Secondary Containment Basins | Containment Basin | polyethylene | 80-1850 gal, open-top, concrete alternative | n/a |
| Polyspheres | Polyspheres | Storage Tank | polyethylene | 520-1080 gal, spherical, primarily agricultural | n/a |
| Horizontal Tanks | Horizontal Tanks | Storage Tank | polyethylene | 30-2600 gal, metal leg stands, primarily agricultural | n/a |
| Lined Steel Vessels | PolyGard | Tank Lining | polyethylene bonded to stainless/carbon steel | 0.25in nominal thickness (vs 0.06in spray-in liners), applied to customer's steel vessel | n/a |
| Non-Standard Tanks & Custom Molded Products | Custom Molded Products | Custom Tank/Product | polyethylene | custom per project, no standard size table | n/a |
| Fittings | IMFO Fittings | Fitting | n/a | sizes 3in, 4in, 6in tapered nozzle, seamless one-piece | n/a |
| Fittings | B.O.S.S. Fitting | Fitting | polyethylene body, PVC/CPVC back ring | sizes 1,2,3in; bolts 316SS/titanium/C-276; gaskets EPDM/Viton/Viton GF | n/a |
| Fittings | Bellows Transition Fitting | Fitting | n/a | SAFE-Tank bottom discharge, pre-assembled, pressure-tested | n/a |
| Fittings | Bolted Flange Fitting | Fitting | PVC, CPVC | sizes 1-4in threaded, 1-6in socketed; bolts 316SS/titanium/C-276/Alloy 400 | n/a |
Sourced from Poly Processing's own catalog documentation.
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Frequently Asked Questions
What is a Poly Processing SAFE-Tank system?
A double-wall secondary containment tank where the outer tank fully contains the inner tank's entire volume, engineered as one integrated system rather than a tank-plus-berm afterthought.
What is XLPE and why does it matter for chemical storage tanks?
Crosslinked polyethylene — it resists environmental stress cracking (ESCR) better than standard HDPE under long-term chemical exposure and UV load, the specific failure mode ESCR-rated resin is engineered to avoid.
What does the IMFO outlet fitting do differently?
The outlet flange is molded as part of the tank wall itself rather than a separate bolted or welded bulkhead fitting, removing the seam that's typically the first leak point on a bottom-outlet tank.
Get the right SAFE-Tank configuration for your chemistry
Ready to buy or need a fast answer? Call, text, or email James directly — (559) 395-5500 · [email protected].