Pressure regulator

A pressure regulator valve comprising

• a body;
• a low pressure chamber;
• a fluid passage disposed within the body;
• an orifice disposed within the valve seat and communicating with the fluid passage;
• a valve pintle configured for sealing the orifice, including a pintle stem and a pintle nut, the pintle stem extending through the moveable pressure boundary member and carrying the pintle nut, wherein the pintle nut is housed within a central boss extending from and integral with the moveable pressure boundary member;
• a moveable pressure boundary member, coupled to the valve pintle, and configured to isolate the fluid passage from the low pressure chamber;
• and
• a resilient member interposed between the pintle retainer and the moveable pressure boundary member.

A pressure regulator comprising:

• housing, including a high pressure chamber and a low pressure chamber;
• a moveable pressure boundary member, configured to isolate the high pressure chamber from the low pressure chamber, including a diaphragm;
• a valve member, coupled to the moveable pressure boundary member, and configured to seal a fluid passage within the high pressure chamber;
• and
• a support surface for effecting support of the diaphragm such that the diaphragm is fully supported when excessive fluid pressure forces are applied to the moveable pressure boundary member from within the high pressure chamber.