A multifunction valve includes a valve body defining an inlet, and outlet and an interior chamber. A flow control gate may be disposed within the interior chamber and comprises one or more protrusions configured to provide a high level of precision control of a fluid flow rate through the multifunction valve as the flow control gate is rotated through an arcuate range of positions. The protrusions may comprise a cut-out portion, wherein the size and/or shape of the cut-out may be configured to modify the fluid flow rate through the multifunction valve. A method of modulating a fluid flow rate includes directing fluid flow through a multifunction valve from an inlet to an outlet, the multifunction valve including a flow control gate, adjusting the flow rate through the multifunction valve by rotating a control shaft to position the flow control gate to variably occlude the outlet of the multifunction valve.

A fluid valve device. A first rotary slide valve, a second rotary slide valve, and a servomotor are provided. Each of the rotary valves has a rotary slide arranged in a rotary slide housing and drivable via a drive shaft by the servomotor. The first rotary slide valve is rigidly coupled and the second rotary slide valve is coupled via a freewheel to the drive shaft.

A valve body including an inlet pipe, an outlet pipe, a valve body, a flow channel formed in the valve body. A valve plug unit has a stem, a wing, and a plug arranged along a longitudinal access of the valve plug unit, the plug being arranged to be rotatable in a plug housing formed in the flow channel. A bypass inlet is arranged in the outlet pipe to facilitate fluid flow to and from the reservoir. A bypass outlet nozzle is arranged in a wall of the chamber, the bypass outlet nozzle configured and arranged such to direct a fluid jet stream at a surface of the wing that is fixedly connected to the stem of the valve plug unit to thereby rotate the wing from a first position to a second position, the bypass outlet nozzle being fluidically connected to the reservoir via a bypass.

A valve body including an inlet pipe, an outlet pipe, a valve body, a flow channel formed in the valve body. A valve plug unit has a stem, a wing, and a plug arranged along a longitudinal access of the valve plug unit, the plug being arranged to be rotatable in a plug housing formed in the flow channel. A bypass inlet is arranged in the outlet pipe to facilitate fluid flow to and from the reservoir. A bypass outlet nozzle is arranged in a wall of the chamber, the bypass outlet nozzle configured and arranged such to direct a fluid jet stream at a surface of the wing that is fixedly connected to the stem of the valve plug unit to thereby rotate the wing from a first position to a second position, the bypass outlet nozzle being fluidically connected to the reservoir via a bypass.

A drain valve (10) includes a housing (11), a fluid inlet (12), a gas outlet (13) and at least one liquid outlet orifice (19) arranged in a liquid outlet member (20) of the housing (11). The drain valve (10) furthermore includes a float (16) connected to a lever (17) on a first end (18). The float (16) is arranged in a float chamber (15) of the housing (11). The float chamber (15) is connected to the fluid inlet (12), the gas outlet (13) and the at least one liquid outlet orifice (19). The liquid outlet orifice (19) may be opened or closed by a closing member (21) that is connected to a second end (22) of the lever (17) and is rotatably connected to the liquid outlet member (20).

A rotary valve includes a first ball valve including a first stem extending from a first proximal stem end to a first distal stem end outward from the first ball valve. The first stem including a first slotted opening extending from the first distal stem end into the first stem. The rotary valve includes a second ball valve including a second stem extending from a second proximal stem end to a second distal stem end outward from the second ball valve. The second stem including a second slotted opening extending from the second distal stem end into the second stem. The second stem extends towards the first stem. The rotary valve includes a drive key of non-uniform thickness located within the first slotted opening and the second slotted opening. The drive key operably connects the first ball valve to the second ball valve.

A rotary flow control valve that requires no linear motion is disclosed. The rotary flow control valve comprises a drive mechanism and a rotary flow control valve coupled with the drive mechanism, wherein the rotary flow control valve is rotated by the drive mechanism without requiring conversion of a linear motion to a rotational motion.

The present subject matter discloses a system and method of winterizing and de-winterizing a structure in order to prevent waterlines from freezing and getting damaged. The system includes electronic valves connected to waterlines i.e., main waterline and drain line. The electronic valves include electronic ball valves. The electronic valves communicatively connect to an electronic device. A user operates the electronic device to winterize and de-winterize the structure. Winterizing includes closing the electronic valve on the main waterline that supplies water into the structure and opening and closing the electronic valve on the drain line causing the water to drain out. De-wintering includes closing the electronic valve on the drain line and opening the electronic valve on the main waterline to supply water back into the structure. Winterizing prevents the waterlines from freezing and getting damaged in cold weather conditions.

A three-way flow dividing valve structure is provided, including a valve body, a water divider, a spring, and a switch handle. A water intake communicating with the water inlet is formed on the side wall of the flow dividing chamber. A first and second outlet holes respectively communicating with the water outlets are formed at the bottom of the flow dividing chamber. The water divider includes a water dividing shaft and a water dividing dish; the bottom of the water dividing shaft is connected to the water dividing dish in the flow dividing chamber. The water dividing dish has a water dividing hole movably communicating with the outlet holes. The top of the water dividing shaft protrudes from the valve body and is connected to the switch handle. Two ends of the spring abut against the water dividing dish and the bonnet respectively. The present disclosure can be operated effortlessly.

A valve includes a housing having a housing cavity and at least two housing openings. A valve body is rotatably provided in the housing cavity and includes a valve body top portion, a valve body bottom portion and a valve body sidewall. The valve body sidewall has an upper valve body sidewall and a lower valve body sidewall which are connected to each other. An outer surface of the upper valve body sidewall is a partial cylindrical surface, and an outer surface of the lower valve body sidewall is shaped to have a gradually decreasing diameter in a direction from top to bottom. A seal is provided on the valve body sidewall and the seal is configured to match with the housing to enable the valve body sidewall to close at least one of the housing openings.