Critical Process Vessels Saint-Gobain Performance Plastics offers a complete line of critical process vessels and equipment, including open-top and sanitary tanks and process vessels, as well as tank stands, mixers, fittings and other accessories. Saint Gobain tanks are rotationally molded in a variety of high quality virgin resin materials. Tough, lightweight and corrosion resistant. Seamless design eliminates the major cause of leakage associated with lesser quality plastic tanks, and simplifies cleaning as well. Won't wick or crack like fiberglass tanks, and cost less than tanks made with this material as well. Much lighter (less than half the weight), easier to maintain and significantly less expensive than stainless steel tanks. Most tanks have a visible liquid level, and all are manufactured with controlled wall thickness with no corner thinning. Generous rounded corners have less molded-in stress, making them less likely to crack and easier to clean. The safety equipment, fittings and accessories available as part of this product line feature the same quality, reliability and toughness found in our tanks and vessels.