One or more systems are disclosed for a diaphragm pump. The diaphragm pump includes a valve inlet portion elongated in a first direction along a longitudinal axis, and a valve outlet portion coupled to the valve inlet portion. A ball check valve is arranged between the valve inlet portion and the valve outlet portion. The ball check valve includes a sealing ring arranged over the valve inlet portion, and a ball arranged over the sealing ring. The ball is configured to move between a seated position and an unseated position, wherein a central axis of the ball extends through a center of the ball and in the first direction, wherein the central axis is coincident with the longitudinal axis when the ball is in the seated position, and wherein the central axis is offset from the longitudinal axis when the ball is in the unseated position.

A silencer device for acoustic suppression may include a first housing section; and a second housing section detachably connected to the first housing section. The first housing section may define a first baffle chamber and the second housing section defines a second baffle chamber. The silencer device may include a baffle device positioned within the first baffle chamber and the second baffle chamber.

A hydraulic pressure control unit according to the present invention is a hydraulic pressure control unit for a vehicular brake system and includes: a discharge channel (140), from which a brake fluid is discharged, a pressure of the brake fluid being increased by a pump (60); and a pulsation reducer (100) provided to an intermediate portion of the discharge channel (140). The pulsation reducer includes: a pressure change suppressor (110), a volume of which varies according to the pressure of the inflow brake fluid; and a throttle valve (120) arranged on a downstream side of the pressure change suppressor (110) in the discharge channel (140). The throttle valve (120) includes: a first housing (121) having an end surface (121a), one end of which is opened and the other end of which is provided with a first through-hole (121b), the brake fluid flowing into the first through-hole (121b); a first valve body (122) movable in an axial direction of the first housing (121) in the first housing (121); and a first spring member (124) urging the first valve body (122) in a direction toward the first through-hole (121b) of the first housing (121). The first valve body (122) includes a seal section (122b) that closes the first through-hole (121b) of the first housing (121) and is formed with a throttle hole (122ba).

Replaceable wear inserts of a material resisting abrasive wear due to particulates within pumped fluid are used for the inlet and/or outlet of a pulsation dampener coupled to the outlet of a land-base or mobile-mounted pump. The wear inserts may be integrated with pressure orifice devices contributing to pressure pulsation dampening. The wear inserts may have internal passages or be mounted to create turbulent flow through the pulsation dampener to mitigate the risk of dead spots accumulating particulates. The wear inserts may be sized for either “loose” or “tight” fit within the inlet and outlet to facilitate removability despite the potential for particulates embedding within the gap. Grooves may be provided with O rings to seal against pressure leaks.

The invention relates to a blood treatment device having at least one metering line which opens into a fluid circuit, wherein a conveyor module is arranged in the metering line and comprises a membrane pump and a valve which is arranged at the pressure side thereof and which can act both as a blocking valve and as a restricting valve.

A modular stabilizer is provided for a reciprocating pump. The modular stabilizer includes at least one fluid dampening module incorporating a dampening material and forming a second fluid flow path in fluid communication with the first fluid flow path defined between the entry ports of the suction manifold. The second fluid flow path is an alternate fluid flow path branching from the first fluid flow path.

The hydraulic snubber insert can have an elongated stem and at least one segment extending transversally from the stem, each segment having a size and shape mating a cross-sectional size and shape of the liquid carrying line, and at least one aperture, the insert being configured for the at least one segment to be pushable snugly into the liquid carrying line and pullable out from the liquid carrying line via the stem.

A hydraulic assembly, particularly for supplying a brake circuit of a vehicle brake system with fluid at brake pressure, includes a throttle element, which in the unpressurized state rests with an upper side on a first support and with an underside on a second support, the supports being formed on opposite sides of the gap. The throttle device advantageously dispenses with a spring element for axial pre-tensioning, is accordingly of compact and cost-effective construction and is moreover easy to assemble.

Presented herein are systems and methods for attenuating certain pulsations in a hydraulic system comprising a pump and a hydraulic actuator. In certain aspects, an accumulator comprising an internal volume that is divided into a working chamber and a contained chamber may be utilized to at least partially attenuate propagation of certain pulsations in the system. The working chamber may be fluidically coupled to the pump via a first flow path and fluidically coupled to a chamber of the actuator via a second flow path. The system may be designed such that a first inertance of the first flow path is greater than a second inertance of the second flow path. Additionally or alternatively, the system may be designed such that a resonance associated with the first inertance and a compliance of the accumulator may occur at a resonance frequency of less than 90 Hz.

A novel passive surge water hammer protection system, which is useful for Automated Surge Water-Hammer Transients control, protection and for preventing water hammer transients from occurring in a water pipeline & pumping plant. The present SCT invention creates two differential HGLs at same junction/node, Upstream level at (16) and Downstream level at (10) inside the circular vertical loop (4)=(1,16,9,10,11,2) an unequal column separation, vertical differential (16,10) is developed, this simple passive method to force the minimum negative pressure from below the pipe invert level to minimum positive pressure (16,10) which is well above the pipe invert level (HGL-3).