The FLS, MJFS, and MJS Valve Setters are utilized in conjunction with the Model 450, 450DA, 475, and 475DA Ductile Iron n-Pattern Backflow Preventer series. Ideal for installation in compact spaces or for retrofitting existing applications, the integral thrust support provided by our valve setters reduces installation time and eliminates the need for additional concrete thrust blocks. Options include Flange x Flange (FLS), Mechanical Joint x Flange (MJFS), or Mechanical Joint x Mechanical Joint (MJS) connections, with features like a maximum working water pressure of 175 psi and water temperature of 140°F.