Rotork Fairchild Model 55 polymer pressure regulator

Rotork Fairchild has introduced a polymer pressure regulator with features for high-precision pressure control duties. The Model 55 pressure regulator features a non-rising stem within a small footprint design, delivering high-precision control in a lightweight and compact package.

Manufactured entirely from polymer and stainless steel, the product offers compatibility with medical and scientific gases such as nitrogen, helium and oxygen. Applications include precision pressure decay and leak testing, medical ventilators, respiratory diagnostic systems, balloon pumps and sterilisation equipment.

The venturi design compensates for downstream pressure droop under flow and provides highly accurate pressure output control under all conditions. The separate control chamber isolates the control diaphragm from the main flow to eliminate hunting and buzzing.

With a supply capacity up to 150 psi (10 Bar) and flow capacity up to 10 SCFM (283 L/min), the device controls output pressures up to 100 psi (0.7 Bar) to within ±0.2 psi (14 mBar) or better, even with fluctuating or rapidly decreasing supply pressure. This high pressure capability, combined with pinpoint accuracy at low control pressures of 7.5 psi (0.5 Bar) or less, sets the product apart from conventional regulators for demanding applications.