Use the LK 861 in directly fueled heating systems to circulate heat efficiently. It includes everything needed for control and safety: a high-efficiency pump, thermometers, a check valve, and insulation.

Available in C/C 90, C/C 125 & C/C 125 Cooling.

Use the LK 862 when you need a mixed supply temperature. It combines a high-efficiency pump with a three-way mixing valve for quick, accurate blending.

Available in C/C 90, C/C 90 Cooling, C/C 125 & C/C 125 Cooling.

Use the LK 863 to keep the supply temperature stable. Its built-in LK 551 HydroMix thermic mixing valve automatically balances supply and return flows.

Available in C/C 125.

Use the LK 864 to protect your storage tank and boiler. The LK 823 ThermoVar loading valve maintains tank stratification and keeps the boiler return hot for higher efficiency.

Available in C/C 125.

Use the LK 865 where scald protection matters. The LK 551 HydroMix HWC valve shuts off hot water if the cold-water feed fails.

Available in C/C 125.

Use the LK 866 in systems that demand a high return temperature. Its four-way mixing valve keeps the return hot, reducing corrosion and extending heat-source life.

Available in C/C 125.

Use the LK 867 to manage two heat sources or a stratified tank. The bivalent four-way valve and automatic controller always draw from the most efficient heat source.

Available in C/C 125.

Mount your pump groups on the LK 860 manifold for a tidy installation. It's available for one to four pump groups, letting you combine multiple circuits neatly.

Available in C/C 90, C/C 125 & C/C 125 Cooling.