Swagelok RHPS series dome-loaded pressure regulators

The RHPS series dome-loaded pressure regulators permit high flows and exhibit less droop than spring-loaded designs in controlling the pressure of liquids and gases. The dome-loaded design relies on a pressurised chamber above an elastomer diaphragm in place of a spring to operate the regulator. Depending on regulator size and configuration, inlet pressures can range to 400 bar. Regulated pressures span 0.10 to 2 bar, 0 to 70 bar, 0 to 200 bar, and 0 to 400 bar.

The dome-loaded regulators are available for pipe sizes ranging from ¼ to 4″with corresponding C_v values ranging from 0.1 to 73. End connections include NPT female, BSPP female, and ANSI and DIN flanges. Body, dome and trim material for all models is 316L stainless steel. Operating temperatures range from -20 to 80°C. Seal, O-ring, seat and diaphragm material options include nitrile, EPDM and fluorocarbon FKM. Seat materials also include PCTFE and PEEK.

Larger models, 1½″ and above, include an integral pilot regulator to keep the dome pressure constant. The dome can be energised by system pressure or an external pressure source. Special external feedback configurations that require no external power are available to permit finer control of pressures. All models include connections for installation of pressure gauges or other pressure-measurement devices.