Waterway Hi-Flow Suction,1.5"s x Hex,Black # 640-3251 V

Improves performance and safety! This suction / main drain fitting complies with the provisions of the Virginia Graeme Baker Act (VGB) 2008 and is UL tested to meet the requirements of ASMEA112.19.8-2007. In case of obstruction of suction fitting openings, the differential pressure causes air to be pulled into the pump suction line. As a result, the pump will lose prime and breaks the vacuum behind the suction cover. The Waterway Hi Flo Spa Suction is easy to install and service. 2 3/8" hole size – 3.5” 20 GPM Hi-Flo Suction Assembly. Add a Vacuum Break Fitting to increase flow rating to 92 GPM.