The NK300S Boiler Feed Combination Valve combines a testable back flow preventer with a pressure-reducing boiler fill valve. This feature rich product contains a strainer, pressure gauge, two shutoff ball valves, and test ports to save you time and money. It’s exactly what every residential, light commercial or multi-family building with a boiler needs to speed up installation, checkout, and maintenance visits.

• Conveniently located test ports for easy inspections and check out
• Optimal protection of the potable water supply system
• Pressure reducing valve with inlet pressure balancing - inlet pressure fluctuation does not influence the outlet pressure
• Outlet pressure adjustable and directly visible on the pressure gauge
• Low maintenance effort - cartridge insert and valve insert are completely replaceable
• Pressure Gauge: 0-60 psi @ max temp 140°F (60°C)