There is disclosed a heat-transferring device comprising a buffer tank (1), a reactor vessel (2) in thermal contact with the buffer tank, wherein an active substance is held inside the reactor vessel, a burner (A), a reactor heating loop adapted to transfer heat from the burner to the active substance in the reactor vessel, a reactor cooling loop adapted to transfer heat from the active substance in the reactor vessel to the buffer tank, a volatile liquid reservoir (14) in fluid contact with the reactor vessel, an evaporator (15) in fluid contact with the volatile liquid reservoir, a volatile liquid in the volatile liquid reservoir, with the ability to be absorbed by the active substance at a first temperature and desorbed by the active substance at a higher temperature, an exhaust gas pipe (10,11,12) from the burner to the volatile liquid reservoir to heat it.

A plumbing system pressure protection valve assembly that utilizes a unitary body to connect a hot water tank to a cold water supply, a vacuum breaker, and an expansion tank. The assembly includes two ball valves coupled to the unitary body to isolate the hot water tank from the cold water feed and to isolate and permit draining of the expansion tank. The assembly also includes a rod and foot coupled to a tab on the unitary body to provide support for the expansion tank service valve assembly.

An apparatus supporting a thermal or hydronic expansion tank in fluid communication via a pipe nipple with a water heater in a water piping system. The supporting apparatus comprises a mounting base adapted to be mounted directly to the water heater. A rack constructed of rigid material is adapted to be secured to the tank. The rack is fastened to the mounting base. The tank is mounted in a vertical orientation on the water heater with the pipe nipple pointing upward or downward. There is sufficient spatial separation of the tank from the mounting base to permit the tank to be insulated or otherwise covered for protecting the tank from the environment.

The present invention discloses a hot water dispenser comprising a water tank, an expansion chamber, and a Venturi module. The expansion chamber comprises a top shell, a bottom shell connected to the top shell, and a flexible bladder. Wherein, the water tank is connected to a dedicated faucet, the Venturi module is connected to a water source through the faucet, so when the dedicated faucet is closed, the expansion chamber then immediately creates suction and removes a part of the hot water from the water tank and into the expansion chamber to avoid hot water residue dripping from the faucet. In addition, when the water in the water tank is heated to its boiling point, a part of the hot water will be sucked into the expansion chamber to reduce the pressure in the water tank and prevent the hot water from being ejected out of the faucet due to vapour.

A water boiler comprises an inner tank, an electric heating pipe, and a controller. A lower cover is attached to a mouth of the inner tank. The lower cover comprises an inlet pipe and an outlet pipe, wherein an outlet port at a lower part of the inlet pipe is in communication with lower part within the inner tank. An inlet port of a lower part of the outlet pipe is in communication with an upper part of the inner tank. The lower cover is arranged beneath the upper cover. An upper part of the inlet pipe passes through the upper cover. A cavity is formed between the lower cover and the upper cover. The cavity is partitioned into an upper chamber and a lower chamber by a diaphragm. The lower chamber is in communication with an outer space.

An air pressure regulating device comprises an expansion tank having air stored therein and having an air injection/discharge port at an outside thereof; and a pressure regulation unit provided with a three-way ball valve connected to the air injection/discharge port, a pressure gauge which is installed in any one of flow paths of the three-way ball valve to check an internal pressure of the expansion tank, and a valve core which is installed in a flow path other than the flow path in which the pressure gauge is installed to be capable of injecting or discharging air into or from the expansion tank so as to be capable of controlling the internal pressure of the expansion tank.

A horizontal water boiler is disclosed. The water boiler comprises a tank assembly, an expansion assembly, a control assembly, and a casing assembly. The tank assembly comprises a tank body having a water storage cavity, a tank cover, an insulation component for preventing the passage of heat, a heating tube for heating up the water entering the water storage cavity, and a water flow assembly for allowing water inflow and outflow. The casing assembly is configured for supporting the tank assembly and the expansion assembly; and the casing assembly comprises an installation portion for connecting to a waste disposer. Water from the outside is introduced into the water storage cavity through the inflow pipe and the first pipe, and heated water is led out from the second pipe and the outflow pipe for use.

A horizontal water boiler is disclosed. The water boiler comprises a tank assembly, an expansion assembly, a control assembly, and a casing assembly. The tank assembly comprises a tank body having a water storage cavity, a tank cover, an insulation component for preventing the passage of heat, a heating tube for heating up the water entering the water storage cavity, and a water flow assembly for allowing water inflow and outflow. The casing assembly is configured for supporting the tank assembly and the expansion assembly; and the casing assembly comprises an installation portion for connecting to a waste disposer. Water from the outside is introduced into the water storage cavity through the inflow pipe and the first pipe, and heated water is led out from the second pipe and the outflow pipe for use.

Provided is an air pressure regulating device comprising an expansion tank having air stored therein and having an air injection/discharge port at an outside thereof; and a pressure regulation unit provided with a three-way ball valve connected to the air injection/discharge port, a pressure gauge which is installed in any one of flow paths of the three-way ball valve to check an internal pressure of the expansion tank, and a valve core which is installed in a flow path other than the flow path in which the pressure gauge is installed to be capable of injecting or discharging air into or from the expansion tank so as to be capable of controlling the internal pressure of the expansion tank.

A plumbing system pressure protection valve assembly that utilizes a unitary body to connect a hot water tank to a cold water supply, a vacuum breaker, and an expansion tank. The assembly includes two ball valves coupled to the unitary body to isolate the hot water tank from the cold water feed and to isolate and permit draining of the expansion tank. The assembly also includes a rod and foot coupled to a tab on the unitary body to provide support for the expansion tank service valve assembly.