Control zone devices, systems and methods

A device comprising:

• a main body including a base portion having an inlet passage and an outlet passage and a body portion extending from the base portion, the body portion in fluid communication with the inlet passage and the outlet passage and including a chamber for receiving at least in part a filter;
• a valve bonnet having a solenoid bowl for attaching a solenoid and a pressure regulator socket for attaching a pressure regulator and defining a vent passage;
• a pressure regulator disposed in the pressure regulator socket;
• a cap forming an interface between the body portion and the valve bonnet, the cap including a first portion attached to the body portion and a second portion attached to the valve bonnet, and having an interior in fluid communication with the body portion and the vent passage of the valve bonnet;
• and
• a diaphragm sandwiched between the valve bonnet and the cap defining a pressure chamber between the valve bonnet and the diaphragm,
• wherein in an operational state of the device the pressure regulator regulates pressure of fluid to be discharged from the device to within a preset pressure range by controlling a distance the diaphragm moves from a valve seat.