Our dish meets ASTM specifications designation D1248, Class A, Category 5, Type 111 with a minimum impact brittleness temperature of -180°F. The thickness shall be uniform 1/8" or greater, and the material is corrosion proof from all gases associated with wastewater collection systems. But the quality doesn’t stop there. The lift strap is made of a woven polypropylene web and is attached to the bowl of the dish by a wide head, stainless steel rivet, and a stainless steel ¾" backup washer, and all of the cut edges are seared to ensure against raveling. Ventilation is provided by a vent hole and/or a valve located on the side of the bowl. The hole or valve allows a maximum release of five gallons of water per 24 hours, and is not affected by debris that might collect in the bottom of the dish. Best of all, sewer gas is vented at one PSI or less to maintain safety.
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