A plunger actuated valve system is provided. The plunger actuated valve system includes a discharge valve, a stem extending from the discharge valve, and a suction valve coupled with the stem. The suction valve can be operable to abut against a plunger as the plunger translates in a first direction such that the suction valve is in a closed configuration. The suction valve includes a latching component operable to abut against a catch surface of the plunger when the plunger translates in a second direction opposite of the first direction such that the suction valve translates in the second direction.

A suction cover assembly for a reciprocating pump assembly includes a suction cover having a body that is configured to be held at least partially within an access port of a fluid cylinder of the reciprocating pump assembly. The body includes a receptacle that includes at least one radial opening that extends through the body. The suction cover assembly includes a suction cover retainer that includes a plug configured to be at least partially received within the receptacle of the body. The suction cover retainer includes at least one retention segment configured to be held within the at least one radial opening of the body. The plug is configured to be moved between a locked position wherein the at least one retention segment is in a radially extended position and an unlocked position wherein the at least one retention segment is in a radially retracted position.

This disclosure provides a valve seat having cladded surfaces of high hardness in order to improve the service life of valve seats. The cladded surfaces may include various materials of favorable mechanical properties for mitigating failure mechanisms known for common valve seats (e.g., having a common base metal throughout). In one example, the cladded surfaces are created using an additive manufacturing process, such as laser metal deposition. The cladded surfaces offer advantages including metallurgical bonding, localized low heat input at the laser focus (thus enabling accurate control of temperature and mitigating undesirable heat treatment effects), ductility in middle layers for increasing impact resistance, variable cladding thickness (optionally exceeding 1 mm), increased hardness by material and fusing temperature selections, corrosion resistance, modification of mechanical properties of the same selected material, and allowing for sensor embedment.

A valve seat for a valve assembly for a high-pressure fluid pump is disclosed. The valve assembly includes a valve body, and a valve seat fabricated of a first material. The valve seat has a generally a tubular body having an annular collar having an outer diameter surface extending beyond the outer diameter surface of the tubular body, and an annular insert fabricated of a second material more durable than the first material and affixed to form an inner diameter surface of the collar, the insert forming an annular sealing surface against which the valve body abuts when in a closed position. The insert forms an annular ledge edge at its inner diameter surface that is offset from the inner diameter surface of the tubular body to form an annular chamfered edge.

A valve and seal arrangement for extended life in a positive displacement pump. The arrangement may take on different configurations. The seal may be secured within a shielding sidewall of a valve head for isolation from differential pressure during striking of the valve head at a valve seat. Additionally, the seal itself may include an axial tail for sealing off the fluid chamber below and defined by the seat prior to the striking of the valve head at the seat. Further, a horizontal flange defining a clearance of no more than about a layer of an abrasive constituent of a slurry being pumped may be utilized. That is, as opposed to, or in addition to, sealing in advance of striking, flow may be reduced to no more than a constituent layer thickness in advance of the striking. Other similarly advantageous architectural valve features may also be employed.

A depressurizing device includes a valve base, a first valve, a flexible member, and a top cover. The valve base has a pressure chamber and an outgassing chamber. Top and bottom surfaces of the pressure chamber have an opening and a first valve port respectively. The first valve is located in the pressure chamber and covers the first valve port. The flexible member is disposed on the valve base and has a depressurizing valve and a first outgassing port, the depressurizing valve covers the opening, and the first outgassing port is communicated with the outgassing chamber. A first outgassing channel is at least formed on the flexible member and communicates the pressure chamber to the outside of the valve base. The top cover is disposed on the flexible member and has a first depressurizing port and a second outgassing port.

A fluid end assembly of a hydraulic fluid pump includes a housing having a first housing bore and a second housing bore offset axially from the first housing bore. A plate is fastened to the housing. The plate has a first plate bore axially aligned with the first housing bore and a second plate bore axially aligned with the second housing bore. A first removable valve cover closes the first housing bore and a second removable valve cover closes the second housing bore. A first retainer engages the first plate bore and abuts the first removable valve cover and a second retainer engages the second plate bore and abuts the second removable valve cover.

A valve assembly for a fracturing pump includes a valve seat having a bore, the valve seat having an upper region forming at least a portion of a strike face. The valve assembly also includes a groove and a valve seat insert positioned within the bore. The valve seat insert includes a body portion extending at least a portion of a bore length. The valve seat insert also includes an insert bore extending through the body portion. The valve seat insert further includes an upper insert region, at least a portion of the upper insert region positioned within the groove. The valve assembly also includes a valve member positioned to reciprocate within the bore, the valve member moving between an open position and a closed position.

A piston pump, comprising: a main body (2); a head (3), sealingly associated with the main body (2) at a coupling surface (3a); a pumping chamber (4), at least one portion of which is afforded in the head (3); a piston (5), provided with a head (5a) that is sealingly slidable in the pumping chamber (4) along a longitudinal direction (X); a valve seat (6), afforded in the head (3), which has an access opening (6a) on the coupling surface (3a) and is placed in communication with an intake manifold (S), with a delivery manifold (D) and with the pumping chamber (4); a suction valve (7) and a delivery valve (8) arranged sealingly inside the valve seat (6); wherein the suction valve (7) is movable between an opening position, in which it enables communication between the intake manifold (S) and the pumping chamber (4), and a closing position, in which it prevents communication between the intake manifold (S) and the pumping chamber (4); and wherein the delivery valve (8) is movable between an opening position, in which it enables communication between the intake manifold (D) and the pumping chamber (4), and a closing position, in which it prevents communication between the delivery manifold (D) and the pumping chamber (4).

A piston pump for a high pressure cleaning device is provided, having a pump housing, which includes a first housing part and a second housing part. The first housing part forms a suction conduit and a pressure conduit, and the second housing part forms a plurality of pump chambers each in flow connection with the suction conduit by an inlet channel and with the pressure conduit by way of an outlet channel. The first insert part includes an inlet valve seat and a guide member arranged offset from said inlet valve seat. The inlet closing body includes an inlet valve stem that adjoins the inlet valve plate and is displaceably mounted on the guide member. The first insert part includes an annular inlet valve seat body that points toward the pump chamber and forms the inlet valve seat, wherein the guide member is arranged upstream of the inlet valve seat.