Domeloaded Pressure Regulators Utilize Pressurized Chamber

March 31, 2011
Swagelok domeloaded regulators are available for pipe sizes ranging from 1/4 to 4 inches with corresponding Cv values.

Swagelok RHPS series domeloaded pressure regulators permit high flows and are designed to exhibit less droop than spring-loaded designs in controlling 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 5,800 psig (400 bar). Regulated pressures span 1.4 to 29 psig (0.10 to 2.0 bar), 0 to 1,000 psig (0 to 70 bar), 0 to 2,900 psig (0 to 200 bar) and 0 to 5,800 psig (0 to 400 bar).

Swagelok domeloaded regulators are available for pipe sizes ranging from 1/4 to 4 inches 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 degrees Fahrenheit (-20 to 80 degrees Celsius). Seal, O-ring, seat, and diaphragm material options include nitrile, EPDM, and fluorocarbon FKM. Seat materials also include PCTFE and PEEK.

Larger models 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.  All models, regardless of size, include connections for installation of pressure gauges or other pressure measurement devices.

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