A valve has flow trim assembly that can be quickly and efficiently removed and repaired or replaced. A body section having a central through bore defines an inlet, an outlet and inner chamber or space. An upstream cap and inlet hub are disposed at the inlet of the body member, while a downstream cap and outlet hub are disposed at the outlet of the body member. An actuator stem extends into the inner chamber, while a gear train can transfer torque force applied to the actuator stem to a rotator. A first (movable) trim member is attached to the rotator and can be selectively rotated relative to a second (fixed) trim member. The first and second trim members cooperate to adjust flow opening through the valve.

The valve core assembly includes a valve housing member, an actuating member, a control plate, a moving plate member, a static plate member, a valve seat member and a sealing member coupled to obtain the valve core assembly. The valve housing member includes a first end portion and a second end portion. The actuating member is rotatably disposed in the valve housing member along the first end portion. The control plate is disposed in the second cavity and coupled to the actuating member. The moving plate member is coupled to the control plate and disposed in the second cavity. The static plate member is disposed adjacent to the moving plate member in the second cavity. The valve seat member is detachably coupled to the valve housing member. The sealing member is removably disposed in a cutout portion of the valve seat member. The valve seat member includes design variations.

Metastable state spore incubation mixing systems are described. An example system includes a spores container to store spores, a nutrient container to store nutrients, a water supply line, a syringe tank, a syringe pump, an adjustable valve, a heater, and a controller. In a drawing phase of the system, a controller can cause the syringe pump and the adjustable valve to draw into the syringe tank a volume of spores, nutrients, and water to form a mixture. The controller causes the heater to heat the mixture for a period of time. In a dispensing phase of the system, the controller can cause the syringe pump to expel the mixture through the adjustable valve and into a water distribution system. The controller can direct the system through a number of other phases of operation.

A multi-fuel switching device, including a gas part, is provided. The gas part includes a switching valve. The switching valve includes a housing having an air inlet and an air outlet. An internal rotation of the housing is provided with a valve core located between the air inlet and the air outlet. The valve core is provided with a first airway and a second airway. Cross-sectional sizes of the first airway and the second airway are different. The first airway or the second airway is selected through rotating the valve core to connect the air inlet and the air outlet. The solution solves the issue that a fuel switching device in the prior art cannot adapt to three or more fuels, which causes an internal combustion engine to be unable to maintain the optimal working state.

A fluid flow control unit, in a preferred embodiment, mounted on a section of pipe having a tubular wall forming a fluid flow passage with a flow axis, the unit having a gate section, and a gate pivot section, the pivot section having a body portion mounted on the pipe outer wall surface, a gate mounting cavity formed in the body portion and opening through the pipe wall and providing an access port for the gate section to the mounting cavity, a pivot shaft positioned in the cavity and mounted on bearing structure on the body portion, the diameter of the shaft being dimensioned to allow a laterally curved gate which is affixed to a surface portion of the shaft to pivot up against a ceiling of the pipe to thereby be out of the flow passage main stream at a full open, non-blocking position of the gate, and a gate position control structure on the unit for allowing predetermined degrees of rotation of the pivot shaft in response to the magnitude of fluid flow pressure forces directed against the gate.

A bypass valve includes a base defining a base sealing surface, the base defining a upstream utility bore, a downstream utility bore, a meter inlet bore, and a meter outlet bore each extending into the base sealing surface; and a selector defining a selector sealing surface positioned in sealing engagement with the base sealing surface, the selector defining a primary passage and a secondary passage, the selector defining at least one primary passage bore extending into the selector sealing surface and connecting in fluid communication with the primary passage, the selector defining at least one secondary passage bore extending into the selector sealing surface and connecting in fluid communication with the secondary passage, the selector being rotatable relative to the base about and between a meter position and a bypass position, the selector connecting the upstream utility bore in fluid communication with the meter inlet bore in the meter position.

The valve has a pair of mutually rotatable ceramic valve bodies within the bonnet that cooperate to allow a flow of water in one relative position and to block a flow of water in a second relative position. One valve body is engaged by the valve stem to rotate therewith while the second valve body is held fixed within the bonnet via radial projections that fit into recesses in the bonnet. An elastomeric ring of square cross-section is squeezed against the non-rotatable valve body by a spiral retaining ring that is positioned in a circumferential groove in the bonnet.

A method for manufacturing a water faucet having a main body is provided. Several housing parts of the main body are made of brass using the method of injection molding, and then the inner parts of the main body corresponding the housing parts are made of a polyamide resin using the method of double injection molding together with the respective housing parts.

The present invention provides a wall faucet including: an injection molded plastic faucet body defining a hot water inlet, a cold water inlet, at least one water outlet and a receiving chamber; a valve cartridge seat having two one-way valves accommodated therein suitably and a valve cartridge received in the receiving chamber; and a plate sleeve detachably assembled to the faucet body. The hot water inlet and/or the cold water inlet is formed with a body connector detachably assembled thereto. In the wall faucet of the present invention, the body connector is detachably assembled to the hot water inlet and/or the cold water inlet of the faucet body and, therefore, the body connector can be changed quickly and easily.

A disc valve, in particular a multi-way control valve, is provided which has a housing that has an inlet connection and an outlet connection as connections for a liquid and/or gaseous medium. The connections end in respectively different chambers of the housing, at least one valve disc, in particular a ceramic valve disc, which is provided with at least one first through-flow opening and is arranged rotatably mounted in the housing in order to fluidically connect and separate from each other the different chambers depending on its rotational position by means of the through-flow opening, and a control shaft, which is connected torque-proof to the valve disc in the housing. The disc valve is characterized in that the control shaft or the valve disc has a radial projection, and the housing has at least one rotation stop, which is located in the movement path of the radial projection.