A valve member for a spring-loaded valve assembly includes a top portion having a spring retaining recess, the spring retaining recess extending into the top portion to form a void space, the void space to receive at least one coil of a spring, the spring retaining recess having a recess diameter that is smaller than a top portion diameter, wherein the recess diameter is larger than a rest diameter of a spring base including the coil, the spring retaining recess blocking expansion of the at least one coil when the spring is compressed. The valve member also includes a bottom portion coupled to the top portion. The valve member further includes a sealing element positioned axially below a shoulder of the top portion and legs coupled to the bottom portion.

A valve member for a spring-loaded valve assembly includes a top portion having a spring retaining recess, the spring retaining recess extending into the top portion to form a void space, the void space to receive at least one coil of a spring, the spring retaining recess having a recess diameter that is smaller than a top portion diameter, wherein the recess diameter is larger than a rest diameter of a spring base including the coil, the spring retaining recess blocking expansion of the at least one coil when the spring is compressed. The valve member also includes a bottom portion coupled to the top portion. The valve member further includes a sealing element positioned axially below a shoulder of the top portion and legs coupled to the bottom portion.

A pressure relief valve includes a housing, a poppet, and a spring. The housing includes an internal bore defined along a longitudinal axis of the housing and extending from an upper portion to a lower portion. A ledge or seat is defined within the bore. At least one lower portion hole is defined from an outer surface of the lower portion and into the bore. At least one upper portion hole is defined from an outer surface of the upper portion and into the bore. The poppet is slidably engaged within the internal bore. The poppet includes a head, a shaft, and an internal channel that runs longitudinally through the entire poppet. The head includes a shoulder. The spring is disposed within the bore at the upper portion of the housing and biases the poppet downwards so that the shoulder abuts the ledge or seat.

A valve member for a spring-loaded valve assembly includes a top portion having a spring retaining recess, the spring retaining recess extending into the top portion to form a void space, the void space to receive at least one coil of a spring, the spring retaining recess having a recess diameter that is smaller than a top portion diameter, wherein the recess diameter is larger than a rest diameter of a spring base including the coil, the spring retaining recess blocking expansion of the at least one coil when the spring is compressed. The valve member also includes a bottom portion coupled to the top portion. The valve member further includes a sealing element positioned axially below a shoulder of the top portion and legs coupled to the bottom portion.

A pressure relief valve includes a housing, a poppet, and a spring. The housing includes an internal bore defined along a longitudinal axis of the housing and extending from an upper portion to a lower portion. A ledge or seat is defined within the bore. At least one lower portion hole is defined from an outer surface of the lower portion and into the bore. At least one upper portion hole is defined from an outer surface of the upper portion and into the bore. The poppet is slidably engaged within the internal bore. The poppet includes a head, a shaft, and an internal channel that runs longitudinally through the entire poppet. The head includes a shoulder. The spring is disposed within the bore at the upper portion of the housing and biases the poppet downwards so that the shoulder abuts the ledge or seat.

A valve component utilized in a fluid end assembly of a reciprocating pump may contain a multi-piece construction. The valve component may include a valve body portion, a leg assembly portion, a sealing element, and an insert at least partially captured between the valve body portion and the leg assembly portion. The insert may be constructed from a carbide or a ceramic material, and, when the valve component is fully assembled, may be compressed between the valve body portion and the leg assembly portion. The insert may at least partially form the strike surface of the valve component. The valve body portion and the leg assembly portion may both be constructed from a metallic material, and the valve body portion may define a sealing seat. The sealing element may be constructed from an elastomeric material that may be pre-formed and then compression molded onto the seat of the valve body.

A valve component utilized in a fluid end assembly of a reciprocating pump may contain a multi-piece construction. The valve component may include a valve body portion, a leg assembly portion, a sealing element, and an insert at least partially captured between the valve body portion and the leg assembly portion. The insert may be constructed from a carbide or a ceramic material, and, when the valve component is fully assembled, may be compressed between the valve body portion and the leg assembly portion. The insert may at least partially form the strike surface of the valve component. The valve body portion and the leg assembly portion may both be constructed from a metallic material, and the valve body portion may define a sealing seat. The sealing element may be constructed from an elastomeric material that may be pre-formed and then compression molded onto the seat of the valve body.

A pressure regulator includes a pronged piston positioned inside an internal chamber, such that the pronged piston moves longitudinally along the axis of the internal chamber in response to the pressures exerted on the piston by a liquid flowing through the regulator. The piston has a first disk and a second disk connected by a number of prongs. The second disk is configured to seal the inlet port of the pressure regulator when the piston is in a closed position and the number or prongs act as guides for the piston as it slides within the internal chamber.

A valve component utilized in a fluid end assembly of a reciprocating pump may contain a multi-piece construction. The valve component may include a valve body portion, a leg assembly portion, a sealing element, and an insert at least partially captured between the valve body portion and the leg assembly portion. The insert may be constructed from a carbide or a ceramic material, and, when the valve component is fully assembled, may be compressed between the valve body portion and the leg assembly portion. The insert may at least partially form the strike surface of the valve component. The valve body portion and the leg assembly portion may both be constructed from a metallic material, and the valve body portion may define a sealing seat. The sealing element may be constructed from an elastomeric material that may be pre-formed and then compression molded onto the seat of the valve body.

A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.