Pressure regulators with adjustable boost bodies

A pressure regulator comprising:

• a valve body defining a fluid passageway between an inlet and an outlet;
• a seat in the fluid passageway;
• an actuator casing coupled to the valve body, the actuator casing defining a pressure sense chamber and a channel between the pressure sense chamber and the fluid passageway in the valve body;
• and
• a plug assembly including:
• a stem;
• a plug coupled to the stem;
• a stem guide disposed in the channel of the actuator casing, the stem moveable in the stem guide to move the plug relative to the seat, the stem guide having a first side facing the pressure sense chamber and a second side facing the fluid passageway;
• a boost body on the second side of the stem guide;
• and
• a tube extending through the boost body, the tube and the boost body forming a first unitary structure to prevent movement of the tube relative to the boost body, the tube having a first end and a second end, the second end disposed in a downstream location relative to the seat such that the pressure sense chamber is in fluid communication with the downstream location, wherein a portion of the tube between the boost body and the second end is curved, wherein the portion of the tube is curved to form a first portion and a second portion, the first portion nearest to the boost body and the second portion nearest to the second end of the tube, and a web connects the first portion and the second portion, the web, the first portion, and the second portion forming a second unitary structure, and wherein the boost body is rotatable with respect to the stem guide to position the tube in at least one other orientation relative to the actuator casing.

A pressure regulator comprising:

• a valve body defining a fluid passageway between an inlet and an outlet;
• a seat in the fluid passageway;
• an actuator casing coupled to the valve body, the actuator casing defining a pressure sense chamber and a channel between the pressure sense chamber and the fluid passageway in the valve body;
• and
• a plug assembly including:
• a stem;
• a plug coupled to the stem;
• a stem guide disposed in the channel of the actuator casing, the stem moveable in the stem guide to move the plug relative to the seat, the stem guide having a first side facing the pressure sense chamber and a second side facing the fluid passageway;
• a boost body on the second side of the stem guide;
• and
• a tube extending through the boost body, the tube and the boost body forming a unitary structure to prevent movement of the tube relative to the boost body, the tube having a first end and a second end, the second end disposed in a downstream location relative to the seat such that the pressure sense chamber is in fluid communication with the downstream location, wherein the tube includes a first tube and a second tube that extend from different positions on the boost body and converge to form a third tube, and wherein the boost body is rotatable with respect to the stem guide to position the tube in at least one other orientation relative to the actuator casing.

A pressure regulator comprising:

• a valve body defining a fluid passageway between an inlet and an outlet;
• a seat in the fluid passageway;
• an actuator casing coupled to the valve body, the actuator casing defining a pressure sense chamber and a channel between the pressure sense chamber and the fluid passageway in the valve body;
• and
• a plug assembly including:
• a stem;
• a plug coupled to the stem;
• a stem guide disposed in the channel of the actuator casing, the stem moveable in the stem guide to move the plug relative to the seat, the stem guide having a first side facing the pressure sense chamber and a second side facing the fluid passageway;
• and
• a key to orient a boost body with a tube from a first predetermined orientation to a second predetermined orientation relative to the valve body, wherein the key includes at least one projection that corresponds to a notch in the boost body.