The HVAC Mixing Valves & Adapters category focuses on the control and distribution of water temperature in HVAC and plumbing systems. Whether you are feeding fan coils, radiant loops, storage tanks or fixtures, mixing valves help blend hot and cold water to a safe, stable delivery temperature. The right valve and adapter combination protects occupants from scalding, improves comfort and increases system efficiency by matching output water temperature to the actual load.
In this section you’ll find thermostatic mixing valves, tempering valves, point-of-use mixing valves, three-way and four-way hydronic mixing valves, union sets and adapter kits used in domestic hot water, recirculation, radiant heating, fan coil and boiler applications. Adapters and tailpieces help transition between copper, PEX, CPVC and threaded connections, making it easier to retrofit existing systems or tie new equipment into mixed piping materials on site.
When selecting mixing valves and adapters, verify maximum hot water temperature, required outlet setpoint, flow rate (GPM), pressure rating, piping size, connection type and local code requirements for anti-scald and domestic hot water systems. Many jurisdictions require ASSE- or CSA-listed thermostatic valves at fixtures or for the main domestic hot water distribution. Proper sizing and installation help prevent temperature swings, extend equipment life and reduce energy waste caused by overheating storage tanks to “chase” comfort at the tap.
Pro tip: Always locate thermostatic mixing valves where they are accessible for adjustment and service, and pair them with shutoff valves and check valves on hot and cold inlets. That layout makes future flushing, descaling or replacement much faster and minimizes downtime for the building.
HVAC mixing valves and adapters for domestic hot water and hydronic systems, including thermostatic mixing valves, tempering valves, three-way and four-way valves, union kits and adapters for copper, PEX, CPVC and threaded piping connections in residential and light-commercial applications.
