An electric valve, comprising a housing and an end cover. A cavity and a valve port are formed in the housing. The electric valve further comprises a rotor assembly, a rod assembly, and a valve core assembly; the rotor assembly is connected to one end of the rod assembly; and the other end of the rod assembly is connected to the valve core assembly. The electric valve further comprises a sealing component, and the sealing component is distant from the valve port with respect to the valve core assembly; the sealing component comprises a first cylindrical portion, a membrane portion, and an annular sealing portion; by providing the sealing component, the first cylindrical portion is connected to the rod assembly and a connection position is sealed.

A separating membrane includes: a planar edge region for the joining of the separating membrane to a diaphragm seal body; a working region offset in an axial direction relative to the edge region; and a transition region between the edge region and the working region, wherein the transition region extends over a radial region of not more than one quarter of an outer radius of the transition region, wherein the working region has a substantially planar center and an embossed pattern or undulation pattern between the center and an outer edge of the working region, wherein from the rest position to a point of deflection with a dimensionless pressure equivalent, the separating membrane has a characteristic curve in which, for a coefficient of determination R2 of a linear regression of the characteristic curve, the following applies: (1−R2)<1%.

A resin member capable of inhibiting generation of particles due to repeated bending thereof is provided. A rolling diaphragm 5 composed of a resin member has one surface formed as a liquid contact surface 37a, repeatedly bends when used, and has flexibility. A surface roughness of the liquid contact surface 37a at a portion 371 that bends is less than 0.40 μm as an arithmetic average roughness, and a total light reflectance of the liquid contact surface 37a at the portion 371 that bends is not less than 2.0%.

A resin member capable of inhibiting generation of particles due to repeated bending thereof is provided. A rolling diaphragm 5 composed of a resin member has one surface formed as a liquid contact surface 37a, repeatedly bends when used, and has flexibility. A surface roughness of the liquid contact surface 37a at a portion 371 that bends is less than 0.40 μm as an arithmetic average roughness, and a total light reflectance of the liquid contact surface 37a at the portion 371 that bends is not less than 2.0%.

A diaphragm for a pump has a one-piece elastomeric body centered on an axis and formed with an annular outer clamping edge, an annular flexible web extending radially inward from the outer edge, and a core joined by the web to the outer edge and formed in turn by an upper wall and a lower wall axially spaced therefrom. This lower wall is formed on the axis with a throughgoing hole. An insert between the walls extends through the hole, and interengaging formations on the insert and on the lower wall radially couple the insert to the lower wall at an inner edge of the hole.

A rolling boot used in a constant velocity joint includes: a first fastening portion that is configured to be fastened to a joint shaft of the constant velocity joint; a second fastening portion that is configured to be fastened to a joint case of the constant velocity joint; a first folding portion that is configured to be folded when the constant velocity joint is articulated; a second folding portion that is configured to be folded when the constant velocity joint is articulated and is disposed radially outside the first folding portion; a support portion that is configured to support tensile and compression when the first folding portion and the second folding portion are folded; a first peak connecting the first fooling portion and the second folding portion; and a second peak connecting the second folding portion and the support portion.

A rolling boot used in a constant velocity joint includes: a first fastening portion that is configured to be fastened to a joint shaft of the constant velocity joint; a second fastening portion that is configured to be fastened to a joint case of the constant velocity joint; a first folding portion that is configured to be folded when the constant velocity joint is articulated; a second folding portion that is configured to be folded when the constant velocity joint is articulated and is disposed radially outside the first folding portion; a support portion that is configured to support tensile and compression when the first folding portion and the second folding portion are folded; a first peak connecting the first fooling portion and the second folding portion; and a second peak connecting the second folding portion and the support portion.

A system, method apparatus including a bimetallic mechanical pump diaphragm for fluid handling including two walls forming a chamber divided by a snap-acting bimetallic mechanical diaphragm which uses the rapid, concavity inversing, buckling transition of the diaphragm pump fluid as thermal energy in a first fluid is converted to mechanical energy to push a second fluid as the diaphragm moves from a first position to a second position in the chamber. Two sets of inlet and outlet passageways include one way valves to control the flow of the first and second fluids having different temperatures.

A system, method apparatus including a bimetallic mechanical pump diaphragm for fluid handling including two walls forming a chamber divided by a snap-acting bimetallic mechanical diaphragm which uses the rapid, concavity inversing, buckling transition of the diaphragm pump fluid as thermal energy in a first fluid is converted to mechanical energy to push a second fluid as the diaphragm moves from a first position to a second position in the chamber. Two sets of inlet and outlet passageways include one way valves to control the flow of the first and second fluids having different temperatures.

The invention relates to a safety device (2) for interrupting a gas flow within a gas-conducting device (1). An inertia body (32) moves from a resting position in the case of an acceleration above a specifiable acceleration threshold value acting on it. Due to the movement, the inertia mechanism (3) activates a reaction mechanism (4), which interrupts the gas flow within the gas-conducting device (1). In this process, the safety device (2) is free of gas flowing through it.