said piston is in physical contact with the ball and the other end is in physical contact with the diaphragm subassembly 55 the above described concepts for producing a compact high throughput pressure regulator can be adapted to produce a pressure regulator with a variety of overall dimensions and flow capabilities the above described concepts may also be used to provide pressure regulating valve for the second stage of a two stage pressure regulator valve however it will also be appreciated that although the techniques described herein are suited to the provision of a compact miniature pressure regulator such techniques may also be employed to make compact larger scale pressure regulators the above described concepts for producing a compact high throughput pressure regulator can be adapted to produce a pressure regulator of either the relieving type where excess downstream pressure is vented to the exterior of the pressure regulator or the non relieving type where excess downstream pressure is not vented to the exterior of the pressure regulator although various components discussed above are described as being assembled in a particular order or as being held in place by particular structures a pressure regulator consistent with the present teachings can be constructed using a variety of.