Abstract: A highly efficient circulator system is provided, useful for hydronic systems, including both heating and cooling systems. The stand-alone circulator motor is controllable by input from certain sensors, preferably thermal sensors, which provide data enabling the controller of the brushless pump motor to vary its flow output to meet changes in systems loads. The circulator has a ceramic permanent magnet rotor, such as a ferrite, with an electronically, preferably sinusoidally, commutated, electro-magnetic stator controlling the input of electrical power.

Abstract: The present teachings contemplate a method comprising coating a poly(vinyl chloride) material with a composition including a dicarbonyl compound, a cyanoacrylate compound, or a combination thereof and a viscosity modifying agent so that the composition has a viscosity of from about 50 cps to about 2500 cps; wherein the coated poly(vinyl chloride) material is capable of adhering to a second material without the use of a primer.

Abstract: A highly efficient circulator system is provided, useful for hydronic systems, including both heating and cooling systems. The stand-alone circulator motor is controllable by input from certain sensors, preferably thermal sensors, which provide data enabling the controller of the brushless pump motor to vary its flow output to meet changes in systems loads. The circulator has a ceramic permanent magnet rotor, such as a ferrite, with an electronically, preferably sinusoidally, commutated, electro-magnetic stator controlling the input of electrical power.

Abstract: An integrated fixture for transferring heat from a higher-temperature loop to a lower-temperature loop (e.g., in radiant heating, from a heating unit loop to a radiant loop). The fixture provides a heat exchanger for transferring heat from the higher-temperature loop to the lower-temperature loop. The fixture also includes a casting, in which are formed higher-temperature supply and return ports, lower-temperature supply and return ports, a higher-temperature pump volute, and a lower-temperature pump volute. Liquid from the higher-temperature loop enters the integrated fixture through the higher-temperature supply port, passes through one side of the heat exchanger, transferring heat to liquid circulating through the other side of the heat exchanger in the lower-temperature loop, and leaves the integrated fixture through the higher-temperature return port.

Abstract: Aqueous primer compositions containing substantially no volatile organic solvents, suitable for promoting the bonding of a metal adherend to a second adherend, are prepared by dispersing one or more solid epoxy resins and a solid curing agent into water such that the particle sizes of the solids are less than 30 .mu.m. The primer compositions are environmentally superior to solvent based primers without loss of physical properties, are storage stable, and exhibit excellent solvent resistance.

Abstract: Aqueous primer compositions containing substantially no volatile organic solvents, suitable for promoting the bonding of a metal adherend to a second adherend, are prepared by dispersing one or more solid epoxy resins and a solid curing agent into water such that the particle sizes of the solids are less than 30 .mu.m. The primer compositions are environmentally superior to solvent based primers without loss of physical properties, are storage stable, and exhibit excellent solvent resistance.