Heating Resideo Boiler Trim | Nk300S Boiler Trim Kit W/ Check Valve, 1-1/4″ Npt Air Eliminator, & 4.4 Gal. Expansion Tank

The Nk300S-100 Boiler Feed Combination Valve Reduces Installation Costs And Saves Time In Boilerapplications By Combining Multiple Devices Into One Product That Fits Into A Smaller Footprint. Thisproduct Contains An Integrated Pressure Reducing Valve, Double Check Backflow Preventer With Airvent, Two Shut-Off Ball Valves, Pressure Gauge, And Conveniently Located Test Ports For Easy Inspectionand Check Out.

Includes:

• Tk300-30 Expansion Tank
• Pv100 Automatic Air Vent(1-1/4″ Npt)
• Scv-050 Service Check Valve
• Nk300S-100 – Boiler Feed Combination Valve