A gravity-fed fuel delivery system is provided. A central storage tank holds fuel to re-supply a number of pump trucks or other mechanized equipment, such as on a hydraulic fracturing location, and can be selectively raised or lowered. Hoses or other conduits extend from the central storage tank to individual fuel tanks of the equipment to be refueled. Adapters allow connection of the distal end of each hose or conduit to an inlet opening of a fuel tank. A float valve assembly senses when fuel inside an individual fuel tank is below a predetermined level, thereby mechanically opening a valve assembly to permit fluid to flow from the central storage tank, through a conduit, through the float valve assembly and into the fuel tank.

A gravity-fed fuel delivery system is provided. A central storage tank holds fuel to re-supply a number of pump trucks or other mechanized equipment, such as on a hydraulic fracturing location, and can be selectively raised or lowered. Hoses or other conduits extend from the central storage tank to individual fuel tanks of the equipment to be refueled. Adapters allow connection of the distal end of each hose or conduit to an inlet opening of a fuel tank. A float valve assembly senses when fuel inside an individual fuel tank is below a predetermined level, thereby mechanically opening a valve assembly to permit fluid to flow from the central storage tank, through a conduit, through the float valve assembly and into the fuel tank.

An improved toilet fill valve designed to replace a damaged toilet tank valve within a toilet. The improved toilet fill valve includes a first quick connect coupling which separates an upper section of a pipe body mounted to a float from a lower section of the pipe body mounted to an opening located at a bottom of a cistern tank within the toilet. The first quick release coupling includes a female component threadedly attached to the upper section of the pipe body. The first quick release coupling includes a male component end that can be threadedly attached to the lower section of the pipe body.

This disclosure provides apparatus and methods for watering livestock using a livestock waterer, a water source, and a waterer valve system for replenishing water in a water reservoir of the livestock waterer. A valve housing can be affixed to the water reservoir and coupled to a plunger. A cam can be pivotably coupled to the valve housing and one end of a float arm. A float component can be coupled to the opposite end of the float arm. Water from the water supply can enter the valve housing and exit an orifice in the valve housing along first and second side spouts. The float component can have a generally flat bottom and move vertically along with the water level within the water reservoir. As the float component moves vertically, the float arm pivots the cam. The cam can move the plunger in the valve housing to stop water flow.

A liquid control valve includes a base, a liquid stopper, an adjusting rod, and a linkage. The base includes a first chamber and a second chamber intercommunicating with each other. The base further includes an inner face having an upper stop portion. The liquid stopper includes a valve body movably received in the first chamber and a seal for abutting against the upper stop portion. The adjusting rod includes a fixing arm and an adjusting arm, which are connected to each other by a conical hole and a cone. An end of the fixing arm is pivotably connected to a first pivotal portion of the base. The linkage includes a driving arm and a connecting arm which are pivotably connected. An end of the driving arm is pivotably connected to a second pivotal portion of the base. An end of the connecting arm is pivotably connected to the fixing arm.

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 liquid control valve includes a base, a liquid stopper, an adjusting rod, and a linkage. The base includes a first chamber and a second chamber intercommunicating with each other. The base further includes an inner face having an upper stop portion. The liquid stopper includes a valve body movably received in the first chamber and a seal for abutting against the upper stop portion. The adjusting rod includes a fixing arm and an adjusting arm, which are connected to each other by a conical hole and a cone. An end of the fixing arm is pivotably connected to a first pivotal portion of the base. The linkage includes a driving arm and a connecting arm which are pivotably connected. An end of the driving arm is pivotably connected to a second pivotal portion of the base. An end of the connecting arm is pivotably connected to the fixing arm.

Evaporative coolers and components therefor that may be used at any of a variety of mounting angles without compromising function or requiring complex and custom adjustments based on a particular mounting angle. In one embodiment, a reservoir for an evaporative cooler includes a water collection basin, a float valve assembly including a float valve housing, a float valve, a lift arm pivotably coupled to the float valve, and a float coupled to the lift arm, a pump, and a drain valve, the pump and the drain valve each being within the water collection basin.

A valve includes a valve body, valve arm hinge and valve piston. The valve arm hinge connects the valve arm to the valve body through a pivoting connection. The valve piston moves linearly in a valve piston channel. When a pressurized fluid contacts a second valve piston end, a force is applied to a second valve piston end. Movement of the valve arm from a first valve arm position to a second valve arm position allows the valve piston to move, under the force applied from closed, to open and allows fluid to flow through a valve channel. The float in the first valve arm position is above the position of the float when in the second valve arm position. If fluid in the tank goes below a critical tank fluid level, the valve arm moves from the first valve arm position to the second valve arm position.

A water level control system and device is provided which maintains a desired running level of water in a surge tank connected to a pool or other body of water by facilitating automatic drainage of precipitation water from the body of water. The water level control system includes a water level control device configured to open and close a drain in the surge tank. The water level control device can adopt an open position when water in the surge tank is at a first level slightly above the running level, and a closed position in the presence of surge water or water displaced by bathers causing a rapid water rise in the surge tank above first level.