but the igniter will fail to glow because the switch contacts remain open

the 8402-096BX is the direct cross for S8402-096

Ensure the specific gravity of the gas is accounted for when calculating flow capacity

or failing to activate the safety interlock switch

and complex delivery systems

Watts 0061935 Preventer Els PW 17895 but the igniter will failThe Watts 0061935 is a professional grade 1 2 inch dual check valve backflow preventer engineered specifically for continuous pressure, non health hazard applications. Often cross referenced as the Watts 9D M3 or Watts 9DM3 1 2, this unit is identical in fit and function to the legacy 9D 1 2 model. It features a high durability forged brass body and an intermediate atmospheric vent that provides a visible signal by discharging water if the downstream