The present disclosure relates to the field of ball valves. The present disclosure envisages a non-pressure relieving ball valve that comprises: a stem connected to a handle regulating flow of pressurized fluid entering in the ball valve, a ball coupled to the stem and configured to control flow of the pressurized fluid through the ball valve, a seat abutting the ball to retain it in place, a sealing gasket provided in the ball valve and configured to restrict the flow of the pressurized fluid through the ball valve when the ball valve is in closed position, and a slotted ring configured to be fitted in the ball valve between the seat and the sealing gasket. The slotted ring is adapted to permit ingress of pressurized fluid in slots defined on the slotted ring to enable balancing of fluid pressures on either side of the seat.

Valve seats may include an insert and an outer housing. The insert may comprise a first material and the outer housing may comprise a second material. The second material of the outer housing may exhibit a hardness that is greater than a hardness of the first material of the insert. Valve assemblies and related method may include valve seats.

A ball valve includes a ball that has a passage hole and is rotatably supported, a ball packing that is made of polyimide and is in contact with an outer circumferential face of the ball, and a ball retainer that holds the ball packing, and a spring-loaded lip seal that is installed between the ball packing and the ball retainer and has a metallic spring fit inside a seal case made of a resin.

The invention relates to a valve for interruption of a fluid flow along a fluid flow path passing through the valve, the valve includes an inlet adapter, a valve body connected to the inlet adapter, a seal arranged between the inlet adapter and the valve body with a seal opening through the seal for the fluid flowing when the valve is open, a motor control gear unit, and a sealing body with a ball segment-shaped sealing surface element and bearing element arranged on the side of the sealing surface element. The sealing body is mounted within the valve body so as to be rotatable around an axis running substantially perpendicular to the fluid flow path and through the bearing element.

A flat bottom ball valve is provided in the present disclosure. According to an example, the flat bottom ball valve includes a valve body, a valve core, a valve rod, a bonnet and a flow path. The valve core is mounted inside the valve body. The valve rod is mounted on two opposite sides of the valve body, perpendicular to a liquid flow direction and capable of driving the valve core to turn over. The bonnet is movably mounted on the valve body and parallel to the valve rod. The flow path is defined inside the valve body and connects two ends of the valve body. The valve core includes a main body part, a connecting part formed by extending symmetrically from two sides of the main body part, an accessory defined on the main body part and a first mounting hole in the connecting part to engage with the valve rod. The valve core swings around the valve rod along a path above the valve rod and is capable of being hermetically engaged with the valve body to turn off/on the flow path. A horizontal center line of the main body part is parallel to a horizontal center line of the first mounting hole in the liquid flow direction of the flow path.

A seal for a ball valve comprising a resilient ring defining an engagement feature; a first polymer ring disposed adjacent to a first axial end of the resilient ring and coupled with the engagement feature; and a second polymer ring disposed adjacent to a second axial end of the resilient ring and coupled with the engagement feature.

The disclosed embodiments include systems and methods for retaining a seat insert of a ball valve in place within a seat ring of the ball valve. In particular, the seat insert is an annular ring having a tapered section on an outer wall of the annular ring. The tapered section of the seat insert is configured to mate with a shoulder in an outer surface of a profiled groove of the seat ring. The seat insert snaps into the profiled groove with the shoulder, thereby preventing axial movement of the seat insert with respect to the profiled groove of the seat ring. In addition, a locking ring also fits within the profiled groove of the seat ring to prevent axial and radial movement of the seat insert with respect to the profiled groove of the seat ring. More specifically, once the seat insert has been snapped into place within the profiled groove of the seat ring, the locking ring is also inserted into the profiled groove of the seat ring.

The present invention provides a seal ring structure, which comprises a seal ring member. The seal ring member includes a first ring opening on one side and a second ring opening on the other. A periphery of the first ring opening includes a plurality of leak grooves. When the seal ring member and the valve ball squeeze each other, the plurality of leak grooves can reduce the torque required to rotate the valve ball. A leak-groove length of the plurality of leak grooves is smaller than a seal-ring-member length of the seal ring member. The plurality of leak grooves do not penetrate the seal ring member for avoiding leakage of fluid.

A probe seal for a female hydraulic coupling member has both internal and external pressure-energized seals. The outer wall or opposing ends of the seal have one or more pressure-energized seals for sealing between the body of the probe seal and the body of a coupling member in which the probe seal is installed. Annular, L-shaped, T-shaped or angled grooves in the inner wall of the seal form cavities and sealing projections that can be urged in an inward, radial direction by fluid pressure within an associated cavity to increase the sealing effectiveness between the body of the seal and the probe of a male hydraulic coupling member inserted in the receiving chamber of the female coupling member.

A probe seal for a female hydraulic coupling member has both internal and external pressure-energized seals. The outer wall or opposing ends of the seal have one or more pressure-energized seals for sealing between the body of the probe seal and the body of a coupling member in which the probe seal is installed. Annular, L-shaped, T-shaped or angled grooves in the inner wall of the seal form cavities and sealing projections that can be urged in an inward, radial direction by fluid pressure within an associated cavity to increase the sealing effectiveness between the body of the seal and the probe of a male hydraulic coupling member inserted in the receiving chamber of the female coupling member.