Abstract: A control valve system that allows treated water to return to the supply water may be used with a water treatment system that provides oxidant treatment to control oxidation and flow of water in accordance with various operating cycles. The control valve system causes treated water to flow from the outlet to the inlet of the control valve to provide treated water to an oxidant device to facilitate water treatment. The control valve system may also be configured to prevent untreated water from being directed to the oxidant device, for example, during a regeneration cycle of the water treatment system. The control valve system may further be used in a water treatment system that also provides an air charge.

Abstract: An aeration control valve system with a bypass gas release passage may be used with an aerated water treatment system to control aeration and flow of water and gas (e.g., air or ozone) in accordance with various operating cycles. The aeration control valve system causes gas to be pumped or drawn into the water treatment system during a gas charge or draw cycle to provide a gas charge for aerating the water to facilitate water treatment. The aeration control valve system releases the gas during a gas release cycle while allowing the water treatment system to remain “in service” to continue to treat the water. To allow gas release when water is flowing during service, the bypass gas release passage is located external to or within the aeration control valve system and bypasses a flow region of the water that flows during service.

Abstract: An aeration control valve system with a bypass gas release passage may be used with an aerated water treatment system to control aeration and flow of water and gas (e.g., air or ozone) in accordance with various operating cycles. The aeration control valve system causes gas to be pumped or drawn into the water treatment system during a gas charge or draw cycle to provide a gas charge for aerating the water to facilitate water treatment. The aeration control valve system releases the gas during a gas release cycle while allowing the water treatment system to remain “in service” to continue to treat the water. To allow gas release when water is flowing during service, the bypass gas release passage is located external to or within the aeration control valve system and bypasses a flow region of the water that flows during service.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system causes air to be pumped or drawn into the water treatment system during an air charge cycle to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system releases the air during an air release cycle without requiring a backwash cycle. In one embodiment, the aeration control valve system includes a control valve unit configured for connection to a brine tank but instead fluidly coupled to an air intake inlet and an air release outlet for supplying and releasing air, respectively, when the valve cycle actuator is in the brine position and brine tank fill position, respectively.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system causes air to be pumped or drawn into the water treatment system during an air charge cycle to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system releases the air during an air release cycle without requiring a backwash cycle. In one embodiment, the aeration control valve system includes a control valve unit configured for connection to a brine tank but instead fluidly coupled to an air intake inlet and an air release outlet for supplying and releasing air, respectively, when the valve cycle actuator is in the brine position and brine tank fill position, respectively.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system causes air to be pumped or drawn into the water treatment system during an air charge cycle to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system releases the air during an air release cycle without requiring a backwash cycle. In one embodiment, the aeration control valve system includes a control valve unit configured for connection to a brine tank but instead fluidly coupled to an air intake inlet and an air release outlet for supplying and releasing air, respectively, when the valve cycle actuator is in the brine position and brine tank fill position, respectively.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system causes air to be pumped or drawn into the water treatment system during an air charge cycle to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system releases the air during an air release cycle without requiring a backwash cycle. In one embodiment, the aeration control valve system includes a control valve unit configured for connection to a brine tank but instead fluidly coupled to an air intake inlet and an air release outlet for supplying and releasing air, respectively, when the valve cycle actuator is in the brine position and brine tank fill position, respectively.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system pumps air into the water treatment system to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system may pump air into the water treatment system at atmospheric pressure or may pump air at higher pressures such that the air may be recharged while also treating the water. The aeration control valve may also control the release of air from the water treatment system. The operating cycles may include, for example, a service cycle, a backwash cycle, an air regeneration cycle, a service/air charge cycle, an air release cycle, and a rinse cycle.

Abstract: A pressure-controlled liquid supply system uses a pump control device to switch a pump on and off in response to a pressure level in the pumped liquid. The pump control device minimizes short cycling of the pump by preventing shut off of the pump while a flow is present through the pump control device and by delaying the shut off of the pump. The pump control device also avoids a significant drop in the output pressure by creating a reduced pressure zone, which provides the switch pressure used to switch the pump off.

Abstract: A pivotable control valve assembly may be used with a water treatment device in a water treatment system. A pivotable control valve assembly may be pivotable relative to the water treatment device to allow user controls on the pivotable control valve assembly to be oriented in a desired user access position. In a water treatment system including a plurality of water treatment devices, for example, one or more pivotable control valve assemblies may be pivoted such that user controls for each of the water treatment devices are in desired user access positions.

Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system pumps air into the water treatment system to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system may pump air into the water treatment system at atmospheric pressure or may pump air at higher pressures such that the air may be recharged while also treating the water. The aeration control valve may also control the release of air from the water treatment system. The operating cycles may include, for example, a service cycle, a backwash cycle, an air regeneration cycle, a service/air charge cycle, an air release cycle, and a rinse cycle.

Abstract: A pressure-controlled liquid supply system uses a pump control device to switch a pump on and off in response to a pressure level in the pumped liquid. The pump control device minimizes short cycling of the pump by preventing shut off of the pump while a flow is present through the pump control device and by delaying the shut off of the pump. The pump control device also avoids a significant drop in the output pressure by creating a reduced pressure zone, which provides the switch pressure used to switch the pump off.

Abstract: A pivotable control valve assembly may be used with a water treatment device in a water treatment system. A pivotable control valve assembly may be pivotable relative to the water treatment device to allow user controls on the pivotable control valve assembly to be oriented in a desired user access position. In a water treatment system including a plurality of water treatment devices, for example, one or more pivotable control valve assemblies may be pivoted such that user controls for each of the water treatment devices are in desired user access positions.

Abstract: The system removes contaminating gases, such as radon, from water using a bubbling action. Contaminated water is sprayed together with air through a duct to a bottom region of a bubbling container. The water and air move generally in the same direction through the system, allowing the flow rate to be varied while maintaining forced air/water contact. The aerated contaminated water bubbles upwardly through the bubbling container and passes through one or more diffusing or mixing plates causing the aerated contaminated water to further break out contaminating gases into the air. At the top region of the bubbling container, the contaminating gases are vented while the decontaminated water flows into a tank. The decontaminated water can then be pumped to a desired location, for example, to a house water system.

Abstract: A pump overload control assembly is for use with an electric motor driven pump in a water pumping system. The assembly includes a pump overload control device coupled to a fluid responsive switch, thereby forming a pump overload control circuit that interrupts the current flow to the motor in response to an overload of current flow to the motor. The pump overload control device includes a resettable overload protector and indicator mechanism that visually indicates when an overload has occurred and breaks the current flow through the circuit, for example, in response to heat generated from the overload current flow. The fluid responsive switch opens and closes the circuit in response to the fluid being pumped to an external source, for example, when the fluid pressure level falls below or rises above a predetermined pressure level.