An air distributor may include a thin-wall main pipe (10) and branch pipes (48) distributed on the main pipe. The branch pipes may be symmetrically fixed on the main pipe by locking device disposed in the main pipe. Welding is not needed, and disassembly and maintenance are easy. The main pipe is thin-wall pipe, therefore the weight of the device is greatly reduced, and the production cost is decreased.

A fault-accommodating flow scheduling valve has a first inlet, outlet, and orifice therebetween. The valve has a shuttle valve member on the orifice inlet side, a primary valve member on the orifice outlet side, a compression-loaded primary spring, and first and second compression-loaded balance springs. Below a threshold differential pressure, the primary valve member engages with the outlet-side sealing face to close the valve while the shuttle valve member is spaced from the inlet-side sealing face, and on failure of the primary spring, the primary valve member moves from the outlet-side sealing face but the shuttle valve member closes the valve. Above the threshold differential pressure, the primary valve member opens the valve while the shuttle valve member remains spaced, and on failure of the primary spring, the primary valve member moves further from the outlet-side sealing face but the shuttle valve member closes the valve.

The present invention relates to a multiple coupling manifold comprising a plurality of housings configured to accommodate an equal number of hydraulic couplings. The manifold according to the invention is characterized in that it comprises first and second hydraulic connection means configured to hydraulically connect said manifold to the hydraulic circuit present on the machine once the manifold is mounted on the machine, and is further characterized in that it comprises a first hydraulic connection pipe, which connects said first hydraulic connection means to a first and a second of said housings, and a second hydraulic connection pipe, which connects said second hydraulic connection means to a third and a fourth of said housings.

An automated flushing system includes a base having a flow inlet, flow outlets and a flow manifold, the system also including solenoid valves and a pressure switch mounted upon the manifold. The flow manifold includes a main flow channel connected to the flow inlet, and auxiliary flow channels interconnecting the main flow channel with respective ones of the flow outlets so as to provide flow communication in parallel to the flow outlets from the main flow channel. Each solenoid valve extends into a respective auxiliary flow channel and is actuatable between an activated status and a deactivated status to allow and block flow communication of liquid through the respective auxiliary flow channels to a flow outlet. The pressure switch in flow communication with the flow inlet is configured to sense that the pressure of liquid entering the flow inlet is above a preset minimum before initiation of automated flushing system operation.

An air distributor may include a thin-wall main pipe (10) and branch pipes (48) distributed on the main pipe. The branch pipes may be symmetrically fixed on the main pipe by locking device disposed in the main pipe. Welding is not needed, and disassembly and maintenance are easy. The main pipe is thin-wall pipe, therefore the weight of the device is greatly reduced, and the production cost is decreased.

A noise-reducing valve structure includes a unitary spindle-shaped body having a central lumen for receiving a fluid flow and a poppet member, the body having an inner diameter adjacent the central lumen and an outer diameter and a circumferentially and axially distributed plurality of radial passages adapted to be opened and closed in accordance with a guided position of the poppet member, the plurality of radial passages extending through the spindle-shaped body from the inner diameter to the outer diameter and having a gradually increasing area from the inner diameter to the outer diameter.

A vent arrangement for a flexible pipe body. The vent arrangement comprises a vent valve and an annular region flushing valve. The vent valve is arranged to couple to an annular region access port of a flexible pipe end fitting such that the vent valve can vent fluid from the pipe body annular region. The annular region flushing valve is in fluid communication with the vent valve and the annular region access port. The annular region flushing valve is arranged to inject fluid into the vent arrangement for flushing the vent valve, the annular region access port or the pipe body annular region. An end fitting incorporating the vent arrangement, a flexible pipe comprising the end fitting and a flexible pipe body coupled to the end fitting, and a method of manufacturing a flexible pipe are also disclosed.

A check valve nozzle having at least two discharge ports and providing improved mixing between the discharged fluid and the receiving fluid. The check valve nozzle may be of a duckbill type or a pancake type. The duckbill type may have discharge ports that vary in size, orientation with respect to the longitudinal centerline of the check valve nozzle, and/or construction materials. The pancake type may discharge the fluid from the check valve nozzle in a perpendicular, forward, or rearward direction. The check valve nozzle assembly contains a number of check valve nozzles that can vary in size, orientation with respect to the longitudinal centerline of the end cap of the assembly, and/or construction materials.

To provide a portable device capable of capturing a flow of water from a stream, storm drain or runoff channel, on command and send that captured water into a pipe system, while allowing remote adjustment of the capture and flow rates out of the cube device, the stormwater syphon cube includes a rock grate to prevent stormwater borne objects from entering the device, and an exit valve adjustable via cable control, a side extraction valve adjustable via cable control to adjust the water flow into the extraction pipe, and extraction pipe attached to the cube to carry extracted water away to storage. The sealed exit pipe acts as a syphon drawing water out of the cube.

A noise-reducing valve structure includes a unitary spindle-shaped body having a central lumen for receiving a fluid flow and a poppet member, the body having an inner diameter adjacent the central lumen and an outer diameter and a circumferentially and axially distributed plurality of radial passages adapted to be opened and closed in accordance with a guided position of the poppet member, the plurality of radial passages extending through the spindle-shaped body from the inner diameter to the outer diameter and having a gradually increasing area from the inner diameter to the outer diameter.