Design Engineering

Pressure Regulators

By Design Engineering Staff   

General pressure regulator

Swagelok RHPS Series domeloaded regulators provide high flow rates for liquids and gases.

Swagelok introduced its RHPS series domeloaded pressure regulator that permit high flows and exhibit less droop than spring-loaded designs in controling the pressure of liquids and gases. The domeloaded design relies on a pressurized 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 5800 psig (400 bar). Regulated pressures span 1.4 to 29 psig (0.10 to 2.0 bar), 0 to 1000 psig (0 to 70 bar), 0 to 2900 psig (0 to 200 bar), and 0 to 5800 psig (0 to 400 bar).

Swagelok domeloaded regulators are available for pipe sizes ranging from 1/4 to 4 in. with corresponding Cv 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 -4 to 176° F (-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, 1-1/2 in. and above, include an integral pilot regulator to keep the dome pressure constant. The dome can be energized by system pressure or an external pressure source. Special external feedback configurations, which require no external power, are available and permit even finer control of pressures.



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