Valve Body with Dual Sense Mechanism

In a fluid regulating device having a regulator valve having an inlet, an outlet, and a valve port disposed between the inlet and the outlet, an actuator coupled to the regulator valve and comprising an actuator valve disc, the actuator valve disc disposed within the regulator valve and adapted for displacement between a closed position engaging a downstream side of the valve port and an open position disposed away from the valve port, and a secondary device coupled to the regulator valve and configured to sense an input pressure and to perform a responsive action if the sensed input pressure varies from a secondary device setpoint pressure, the improvement comprising:

• a Pitot tube having a first end with a sensing point disposed within the outlet of the regulator valve, a first branch extending toward the actuator, and a second branch extending toward the secondary device, wherein the first end and the first branch of the Pitot tube place the sensing point and outlet in fluid communication with an interior of the actuator, wherein the first end and the second branch of the Pitot tube place the sensing point and the outlet in fluid communication with an interior of the secondary device, wherein the actuator is configured to cause the actuator valve disc to move toward the valve port when the pressure at the sensing point of the Pitot tube increases and to cause the actuator valve disc to move away from the valve port when the pressure at the sensing point decreases to maintain a pressure downstream of the fluid regulating device approximately equal to a regulator setpoint pressure, and wherein the pressure at the sensing point is the input pressure of the secondary device.

A dual sensing mechanism for a fluid regulating device having a regulator valve having an inlet, an outlet, and a valve port disposed between the inlet and the outlet, an actuator coupled to the regulator valve and comprising an actuator valve disc, the actuator valve disc disposed within the regulator valve and adapted for displacement between a closed position engaging a downstream side of the valve port and an open position disposed away from the valve port, and a secondary device coupled to the regulator valve and configured to sense an input pressure and to perform a responsive action if the sensed input pressure varies from a secondary device setpoint pressure, the dual sensing mechanism comprising:

• a Pitot tube having a first end with a sensing point disposed within the outlet of the regulator valve;
• a first branch extending from the Pitot tube toward the actuator, wherein the Pitot tube and the first branch place the sensing point and the outlet in fluid communication with an interior of the actuator e;
• and
• a second branch extending from the Pitot tube toward the secondary device, wherein the Pitot tube and the second branch of the Pitot tube place the sensing point and the outlet in fluid communication with an interior of the secondary device,
• wherein the actuator is configured to cause the actuator valve disc to move toward the valve port when the pressure at the sensing point of the Pitot tube increases and to cause the actuator valve disc to move away from the valve port when the pressure at the sensing point decreases to maintain a pressure downstream of the fluid regulating device approximately equal to a regulator setpoint pressure, and wherein the pressure at the sensing point is the input pressure of the secondary device.