The 1010 styled valves are preferred when working in conjunction with a sump style tank. All Newton Kwik-Dump Valves are shown below in stainless steel, and are also available in mild steel. Please see the accessories section for a sample of the many items we offer to compliment your specific dumping needs. Valves come standard with a 2-degree angled flange; squared flanges available upon request.  Please specify tank style when ordering