Watts 0555175 Valve R-448A This Apollo 10-600 series valve

This Apollo 10-600 series valve features a 1-1/2 inch female NPT inlet and an expanded 2 inch female NPT outlet to handle massive discharge volumes

specifically engineered for high-efficiency Nordyne furnace units and related HVAC systems

Secure Plumbing: The 1/4" compression fittings prevent the common vibration-induced leaks found in barb-style connections

Dual-Pole Configuration: Allows for simultaneous switching of two separate circuits

Simplified Installation: The alternate tappings (163900) allow for flexible piping configurations and direct mounting of water level monitoring accessories

Watts 0555175 Valve R-448A This Apollo 10-600 series valveThe Watts 0555175 is a 1 2" LF600 Maxiflo Lead Free Silent Check Valve engineered for commercial, industrial, and residential hydronic systems where preventing water hammer is critical. Constructed from a durable lead free cast copper silicon alloy, this valve ensures code compliance for potable water and steam applications. The conical brass disc and PTFE seat provide a positive seal with minimal back check, while the stainless steel spring and guide