Open Top Tanks
Saint-Gobain Performance Plastics high-performance tanks are the best and toughest in the industry. Exacting CAD-based designs, the highest quality virgin resins and tough constr
uction provide excellent solutions for general purpose applications. The tanks are translucent and feature molded-in graduations.
Each tank comes with a matching cover the same thickness as the wall. The open-top unit covers fit like a shoe box; bolted or welded covers are available upon request.
Closed-dome tanks are available for applications requiring a completely closed vessel. The 6" threaded polypropylene covers prevent evaporation and spills. Our open-top tanks are rated for use with 1.8 specific gravity media. If a fiberglass casing is used, the rating goes up to 2.2. Casings provide structural support and prevent bulging at the bottom of the tank. They should be used with rectangular units with any dimension greater than 18 inches. Casings are also required for use with media having a specific gravity greater than 1.8 or for use at prolonged elevated temperatures.
Our stands, mixers, and casings have been pre-engineered for compatibility. Simply choose your tank size and the size codes of the accessories will match.
Fabrication is available for all Saint-Gobain Performance Plastics tanks. Modifications can be made to the covers or the sides.
Materials Overview
| Materials Comparison |
| High Density Polyethylene (HDPE) | Cross-Linked Polyethylene (XLPE) |
| FDA 21 CFR 177.1520 | Not FDA |
| Hard, smooth finish | Cannot be welded |
| Very good chemical resistance | Better chemical resistance to HDPE |
| Good stress-crack resistance | Excellent stress-crack resistance |
| Max service temp - 140° F | Max service temp - 140° F |
| Translucent white | Yellow (bulk tanks - gray) |
| Polypropylene (PP) | Polyvinylidene Fluoride (PVDF) |
| FDA 21 CFR 177.1520 | FDA 21 CFR 177.1520 |
| USP Class VI, Non-cytotoxic | High purity material / low extractables |
| Hard, smooth finish | Larger sizes require casings |
| Very good chemical resistance | Inherent UV resistance |
| Excellent stress-crack resistance | Max service temp - 230°F |
| Max service temp - 220°F | Off-white |
| White | |
Maximum service temperature listings refer to temperatures that should not be exceeded for the materials utilized in the specific product line. Many factors including media, specific gravity of media, external stresses, product geometry, environment, and others affect suitability of material.
Structural Design Cylindrical tanks feature a stepped-flange design that adds rigidity and strength while helping to contain drips. Tanks over 30 gallons feature a slightly raised bottom that channels liquids to tank walls and fittings. Spoked bottoms reinforce larger tanks over 55 gallons and provide near-total drainage.
