A valve seat at least partially formed of a ceramic material for use in a fracturing pump includes a first body and a second body. The first body is configured to be inserted into a fluid passageway of the fracturing pump. The first body has an outer diameter, D1. The second body extends radially from the first body and has an outer diameter, D2, greater than the outer diameter, D1, of the first body. The second body is at least partially formed of the ceramic material.

An electric valve, including a valve body part, a valve seat part, and a valve core part. The valve core part is provided in an inner cavity of the valve body part. The valve core part comprises a valve core. The valve core comprises a lower segment portion. The valve base part comprises a first sealing portion. An end of the lower segment portion can be abutted against or separated from the first sealing portion. The valve body part comprises a bushing part. The valve core part comprises a second sealing portion. The diameter D1 of the axial projection loop of the outer edge of the second sealing portion on the cross section of the lower segment portion, the outer diameter D2 of the lower segment portion, and the inner diameter D3 of the lower segment portion, satisfy: 0.2 mm.sup.2≤D1*(D2−D3)≤6 mm.sup.2.

A valve assembly includes a valve body having a seat-retainer chamber with a floating seat ring disposed adjacent an inner sidewall of the seat-retainer chamber. The floating seat ring is configured to contact a first portion of a plug head at a single annular location prior to a second portion of the plug head contacting a valve primary seat during a closing stroke of the plug head. A static seal is located radially between the floating seat ring and the inner sidewall of the seat-retainer chamber.

Pressure relief valves for use in high pressure applications that may include a conical shaped plunger, a body with a conical shaped mating surface corresponding to the shape of the conical shaped plunger, and one or more sealing elements, such as a pair of O-rings, are disclosed.

A valve seat includes a first end; a second end positioned opposite from the first end; and a body extending from the first end to the second end, the body defining an inner surface and an outer surface, the inner surface defining a main bore extending through the body from the first end to the second end, the main bore defining a main bore axis, the body defining a shaft bore extending from the inner surface to the outer surface, the shaft bore defining a shaft bore axis positioned perpendicular to the main bore axis, the shaft bore defining an inner shaft opening and an outer shaft opening, the body defining a concave seat bearing surface extending around the inner shaft opening.

A plug for a fluid valve has a stem extending along an axis between a first end and a second end, a tip secured to the first end of the stem, a plug body mounted to the stem toward the second end relative to the tip, and a valve seat between the tip and the plug body. The valve seat has a sealing surface that extends past an outer perimeter of the tip and is sized to engage a valve ring of the fluid valve, the valve seat defining an annular space that permits radial movement of the valve ring relative to the axis of the stem to align with the valve ring as pressure is applied to the valve seat.

Provided are sealing member for electronic valve, electronic valve with sealing member, electronic valve with static sealing structure, and electronic valve with double sealing structure. The sealing member has inlet end connected to valve core and outlet end connected to connecting pipe; the electronic valve includes valve body, valve cover, flow rate control device, and the connecting pipe; the flow rate control device includes the valve core; the valve body is provided therein with valve core accommodating chamber and connecting pipe connection port; the valve core is disposed in the valve core accommodating chamber; the connecting pipe is welded to end of the connecting pipe connection port on the valve body. The electronic valve further includes the above sealing member, and the sealing member is located between the connecting pipe and the connecting pipe connection port. Meanwhile, the electronic valve includes static sealing structure and/or double sealing structure.

An explosion protection valve for decoupling system parts or workpieces, in particular for the installation in a pipeline, comprising a housing, a closing body which is axially guided inside the housing on a guide rod and can be displaced from a defined open position in the event of one of the group comprising a pressure and suction wave in the pipeline in at least one closing movement direction into a sealing closed position in which the closing body can be fixed by means of a locking device, a spring assembly, which is in operative connection to the closing body, on the guide rod for holding the closing body in the open position, bearing assemblies each carrying the end of the guide rod, which are each connected to the housing by means of at least one suspension cross-member, and a bearing arrangement, which is subject to play, of the at least one suspension cross-member in a receiving opening on the housing.

Bonnet and valve trim assembly and related methods are described. An example bonnet and valve trim assembly includes a bonnet structured to couple to a valve body via a valve body mounting flange, the bonnet including a cage mounting interface. A cage defining a body has a bonnet mounting interface to couple to the cage mounting interface of the bonnet. A retainer retains the cage mounting interface and the bonnet mounting interface to couple the cage and the bonnet. The retainer to enable axial movement between the cage and the bonnet when the retainer is coupled to the cage and the bonnet.

A receptacle for conveying fluid is disclosed. An example receptacle includes a main body defining an inlet and an outlet, a spring retainer disposed in the main body, a valve seat disposed in the main body, and a poppet configured to slide between a closed position and an open position. The poppet is slidably engaged with the spring retainer between the closed position and the open position and is engaged with the valve seat in the closed position. The example receptacle also includes a spring engaged with the spring retainer and the poppet to bias the poppet to engage the valve seat in the closed position. The spring retainer, the valve seat, the poppet, and the spring are removable from the main body via the inlet without disassembling the main body.