A method for producing a powder-metallurgical product may include providing a powder mixture, forming the powder mixture into a green body, and sintering the green body to form a resulting powder-metallurgical product. The powder mixture may include a first hard phase, a second hard phase, 0 to 1.8% by weight of graphite, 0 to 5% by weight each of cobalt, tri-iron phosphide, copper, bronze, phosphorous, sulphur, calcium fluoride and molybdenum, 0.1 to 1.8% by weight of a pressing aid and a flow improver, and a remaining proportion that is an iron-base powder. The first hard phase may include 52 to 78% by weight of molybdenum, 0 to 2% by weight of silicon, 0 to 1.5% by weight of copper, and a remaining weight proportion of iron and production-related contaminations. The second hard phase may include 0 to 0.8% by weight of manganese and less than 0.1% by weight of carbon.

A relief valve comprises a suction poppet being configured to allow flow of working fluid from the low-pressure passage to the high-pressure passage in a valve-opened state, a pilot passage being configured such that the high-pressure passage and the back-pressure chamber in the suction poppet are communicated through the pilot passage, and a pilot poppet configured to open/close a passage through which the back-pressure chamber and a drain chamber provided in the guide plug are communicated. The suction poppet has a first seating portion being configured to be seated onto the first seat portion of a main body. The main poppet has a projecting portion projecting towards the high-pressure passage. A length from the first seating portion to the tip-end-side opening portion is set so as to be equal to or longer than an outer diameter D.sub.0 of the projecting portion.

A relief valve comprises a suction poppet being configured to allow flow of working fluid from the low-pressure passage to the high-pressure passage in a valve-opened state, a pilot passage being configured such that the high-pressure passage and the back-pressure chamber in the suction poppet are communicated through the pilot passage, and a pilot poppet configured to open/close a passage through which the back-pressure chamber and a drain chamber provided in the guide plug are communicated. The suction poppet has a first seating portion being configured to be seated onto the first seat portion of a main body. The main poppet has a projecting portion projecting towards the high-pressure passage. A length from the first seating portion to the tip-end-side opening portion is set so as to be equal to or longer than an outer diameter D.sub.0 of the projecting portion.

The invention relates to a metering valve (1) for controlling a gaseous medium, in particular hydrogen, comprising a valve housing (2), wherein an interior space (3) is formed in the valve housing (2). A reciprocating closing element (10) is arranged in the interior space (3), which interacts with a valve seat (37) for opening or closing at least one passage channel (25). Furthermore, the metering valve (1) comprises a nozzle (11), the at least one passage channel (25) being formed in the nozzle (11) and the passage channel (25) having a circular-cylindrical portion.

A method and apparatus for auto range control are described. In one embodiment, the apparatus comprises a projector configured to project a sequence of light patterns on an object; a first camera configured to capture a sequence of images of the object illuminated with the projected light patterns; a controller coupled to the projector and first camera and operable to receive the sequence of images and perform range control by controlling power of the sequence of light patterns being projected on the object and exposure time of a camera based on information obtained from the sequence of images captured by the camera.

A method and apparatus for auto range control are described. In one embodiment, the apparatus comprises a projector configured to project a sequence of light patterns on an object; a first camera configured to capture a sequence of images of the object illuminated with the projected light patterns; a controller coupled to the projector and first camera and operable to receive the sequence of images and perform range control by controlling power of the sequence of light patterns being projected on the object and exposure time of a camera based on information obtained from the sequence of images captured by the camera.

A valve includes a valve stem, a first valve body disposed on a distal end side of the valve stem and configured to be driven via the valve stem, a first valve seat on which the first valve body is seatable, an auxiliary seat surface extending along a direction transverse to an axial direction of the valve stem, an auxiliary seat portion disposed on a proximal end side of the valve stem with respect to the first valve body and configured to abut on the auxiliary seat surface when the first valve body is closed, and a biasing member capable of generating a biasing force along the axial direction of the valve stem.

A valve includes a valve stem, a first valve body disposed on a distal end side of the valve stem and configured to be driven via the valve stem, a first valve seat on which the first valve body is seatable, an auxiliary seat surface extending along a direction transverse to an axial direction of the valve stem, an auxiliary seat portion disposed on a proximal end side of the valve stem with respect to the first valve body and configured to abut on the auxiliary seat surface when the first valve body is closed, and a biasing member capable of generating a biasing force along the axial direction of the valve stem.

A pluming fitting and adapter for coupling a tubing to the plumbing fitting. The adapter has first and second adapter end portion with connected fluid passageways. The second adapter end portion being insertable into the free-end portion of the tubing. A pluming fitting housing has a chamber sized to receive the first adapter end portion. When the first adapter end portion is positioned within the chamber, an outer end portion of its fluid passageway is in fluid communication with the chamber. A seal and gripper ring within the chamber seal with and releasably grip the first adapter end portion.

A valve and adapter for coupling a tubing to the valve. The adapter has first and second adapter end portion with connected fluid passageways. The second adapter end portion being insertable into the free-end portion of the tubing. A valve housing has a first chamber sized to receive the first adapter end portion and a second chamber has inward and outward fluid ports. When the first adapter end portion is positioned within the first chamber, an outer end portion of its fluid passageway is in fluid communication with the inward fluid port of the second chamber. A seal and gripper ring within the first chamber seal with and releasably grip the first adapter end portion. A valve element selectively control fluid flow between the first and second fluid passageways. The adapter may be used with a test cap and other fittings which include a seal and a gripper ring.