Patented GVII Valve by Jirasek Stop and Prevent Washing Machine Drain Flooding Designed for fast pumping washers, small pipes and sluggish drains the patented GVII Anti-flood valve by Jirasek is in use in thousands of homes, apartments and laundries worldwide. Designed and manufactured in the USA, the GVII valve saves floors, walls and carpets and can even be adapted to water lawns, trees and shrubs. Gviivalve.com~Site InfoWhoisTrace RouteRBL Check