A rotary valve 1 comprising a stator 3 and a rotor 5, wherein the stator comprises a plurality of connection ports (17a-17l) and orifices (19a-19l) and the rotor comprises a plurality of pairs of rotor valve orifices (23a-23h) joined by transfer channels (25a-25d). The rotor is able to be placed in different working positions whereby fluids can be fed to, for example, chromatography columns and/or can be bypassed through or around the valve. The invention also relates to a system comprising two components such as chromatography columns and a rotary valve.

The present disclosure relates to a hydraulic component with a valve unit for a hydraulic system, and a hydraulic system having such a hydraulic component. The valve unit of the hydraulic component has a valve block and a valve piston. The valve piston is moveably along a first bore supported in the valve block. Further, the valve unit is admittable with pressurized hydraulic fluid and is configured such that the valve piston can be moved between a closed position and an open position. The hydraulic component according to the disclosure is particularly characterized in that the first bore is configured as a through-hole through the entire valve block and the hydraulic component has a collecting unit. The collecting unit at least partially surrounds the two end openings of the first bore and is configured collect and drain hydraulic fluid leaking out of the two end openings of the bore.

A digitally controlled current to pressure converter (CPC) and method of controlling same is provided. The method of controlling includes the step of periodically imparting symmetrically-opposed movement of a control valve of the CPC to loosen and flush accumulated silt therefrom. More particularly, the method may include the step of periodically introducing a small-amplitude symmetrically-opposed impulse to a controller that actuates a hydraulic control shaft of a three-way rotary valve. Also provided is a method of preventing malfunction due to faulty input or feedback signals received by the CPC, and a method of detecting the health status of multiple CPCs when used in a redundant configuration.

An apparatus includes a production tool and a pipe connected to the production tool. The pipe includes an inner pipe formed of a metal-free material, an outer pipe encircling the inner pipe, and an inlet connected to a channel between the inner pipe and the outer pipe. The apparatus further includes a chemical supply system connected to the pipe. The chemical supply system is configured to supply a chemical through a channel encircled by the inner pipe to the production tool.

A nozzle cap spacer for a hydrant nozzle cap includes a spacer body defining an outer body edge, the spacer body defining a spacer body thickness; and a resilient first spacer spring arm extending from the outer body edge and biased away from the spacer body in an extended orientation, wherein the first spacer spring arm defines a first spring arm thickness; wherein the first spring arm thickness of the first spacer spring arm is equal to the spacer body thickness of the spacer body.

A condensate pan for a condensing furnace includes a main chamber to receive exhaust gases, a condensate trap separate from the main chamber and internal the condensate pan and a main drain.

A modular water leakage detector includes a housing that carries a plurality of water leakage sensors, an electrical water shutoff valve, and circuitry coupled thereto. In response to sensing water leakage, the circuitry actuates the valve to shut off a water supply. Detectors can communicate alarm indicating signals directly with one another. The detectors can include a wireless transmitter and communicate with a displaced alarm monitoring system.

An embodiment fluid recovery structure includes a body having an interior cavity, ports integrally joined to first walls of the body and having port walls that extend away from the body, with each of the ports having a port opening that is contiguous with the interior cavity, and a drain structure integrally joined to a second wall of the body and having a drain hole that extends from the interior cavity through the drain structure.

The application relates to a liquid containment assembly (200) for a wind turbine (10), comprising: a support (202) for supporting wind turbine equipment (220); and a flexible container (300) suspended beneath the support (202). The flexible container (300) is arranged such that it is moveable between a collapsed position, in which the liquid containment assembly (200) has a first depth (D1), and an expanded position, in which the liquid containment assembly (200) has a second depth (D2), the second depth being greater than the first depth.

A spill containment system is attachable to a riser pipe with an axially moveable seal. The spill containment system allows access to a drop tube in the riser pipe via a removable liquid communication assembly. The spill containment system includes a sealed interstitial space, which remains sealed during installation, service and use of the system. The spill containment system is protected by a weather resistant cover assembly.