A system for securing a valve actuator to body of a valve assembly includes an actuator housing having housing lugs protruding radially to define a plurality of housing slots therebetween. A bonnet has bonnet lugs protruding radially to define a plurality of bonnet slots therebetween. Each of the housing lugs are sized to pass axially through a respective one of the bonnet slots when the actuator housing is in a released position and, after passing through the bonnet slots, the actuator housing is rotatable to a locked position where at least a portion of one or more of the housing lugs is axially aligned with a portion of a respective bonnet lug to prevent axial movement of the actuator housing, the actuator housing rotating less than one full revolution between the released and locked positions. A securing mechanism prevents relative rotation between the actuator housing and the bonnet.

A system includes a reciprocating engine, the reciprocating engine includes a poppet valve having a first valve end and a second valve end. The poppet valve includes a valve head having the first valve end. The valve head may open and close a fluid passageway within the reciprocating engine. The poppet valve also includes a stem extending from the valve head and having a first length. The stem has the second valve end and the second valve end is substantially opposite the first valve end. The poppet valve also includes a cavity aligned with a centerline axis of the poppet valve. The cavity includes a first region disposed within the valve head and a second region disposed within the stem, and the second region has a second length that is shorter than the first length. The poppet valve further includes a metal alloy disposed within the cavity. The metal alloy is in a liquid-phase during operation of the reciprocating engine and may transfer heat from the valve head to the stem.

Embodiments disclosed herein describe systems and methods for a spring retainer configuration without suction bore grooves, wherein the spring retainer may be secured in place via a keeper. By eliminating the grooves, embodiments may reduce the surface area of the bore intersection, which may slow the rate of material erosion. Accordingly, embodiments may extend the life of a fluid end in high pressure environments.

A diaphragm valve comprises at least one valve body which has at least one inlet, at least one outlet, at least one flow channel and at least one shutoff web dividing the flow channel into channel portions. The diaphragm valve furthermore comprises a diaphragm which rests on a circumferential sealing seat of the valve body, and a drive having a drive housing, the drive being coupled to the diaphragm to press the diaphragm against the shutoff web for closing the valve. The diaphragm valve furthermore comprises a fastening unit for detachably locking the drive to the valve body, the fasting unit having a bayonet cap and an additional central retightening unit by means of which an axial tightening force is generated.

Embodiments disclosed herein describe systems and methods for a spring retainer configuration without suction bore grooves, wherein the spring retainer may be secured in place via a keeper. By eliminating the grooves, embodiments may reduce the surface area of the bore intersection, which may slow the rate of material erosion. Accordingly, embodiments may extend the life of a fluid end in high pressure environments.

There is provided a double closure orifice fitting having an orifice fitting body and a valve carrier sized to be installed within a valve cavity. The body of the valve carrier has an actuator surface on the bottom, retainer clip recesses formed in the first and second end, one or more spring members extending from the top, and a valve strip having retainer clips that is removably attached above the top of the valve carrier body and against the spring members by engaging the retainer clip recesses and the retainer clips such that the retainer clips are held in tension by the one or more spring members. The valve carrier is movable between an open position spaced laterally from the passageway and a sealed position such that the valve strip sealingly engages the valve cavity to seal the passageway by an actuator that engages the actuator surface.

A closure assembly including a retaining cover, a first catch plate sitting partially within the retaining cover, a second catch plate sitting partially within the retaining cover opposite the first catch plate and spaced apart from the first catch plate, and a closure pressing against the first catch plate and pressing against the second catch plate.