Swagelok® Pressure-Reducing Regulators, Dome-Loaded
Pressure-reducing, dome-loaded regulators can meet the needs of a variety of pressure, temperature, and flow conditions.
Request More InformationPressure-reducing, dome-loaded regulators minimize droop by balancing outlet pressure with dome pressure, enable dynamic pressure control to provide more consistent downstream pressure as flow demand vary, and maintain control safely by balancing the dome pressure against the force of the outlet pressure.
Available models include:
Air-Loaded, Pressure-Reducing Regulators (RA Series)
Specifications
- Choice of dome-to outlet pressure ratios: 1 to 15, 1 to 40, or 1 to 70
Options
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
- Gauge connections—choice of 4 configurations
Differential Pressure, Dome-Loaded Pressure Reducing Regulators (RD[H]6DP Series)
Specifications
- Dome-to outlet pressure ratio—1:1
Options
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
- Gauge connections—choice of 4 configurations
Compact, General-Purpose Dome Loaded Pressure-Reducing Regulators (RD2 Series)
Options
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
- No filter—for liquid applications
- Panel mounting kit (no disassembly required)
General-Purpose, Dome-Loaded Pressure-Reducing Regulators (RD[H]6 and RD[H]8 Series)
Specifications
- Dome-to-outlet pressure ratio—1:1
- Ports—1/4 in. female NPT outlet gauge port
Options
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
- Pilot regulator
- Gauge connections—choice of 4 configurations
- Antitamper
Integral Pilot-Operated, Dome-Loaded Pressure-Reducing Regulators (RD[H]10 and RD[H]15 Series)
Specifications
- Dome-to-outlet pressure ratio—1:1
- Pilot regulator for improved performance
Options
- External feedback (EF) for improved performance
- EF to pilot regulator limited to 290 psig (20 bar)
- EF to main regulator limited by standard outlet pressure range
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
- Gauge connections
High-Purity, High-Flow Gas Regulators (HF Series)
Specifications
- Surface finish—5 µin. Ra electropolished
- Body material—316L VIM-VAR stainless steel
- Flows up to 300 std L/min
Options
- End connections/mounting styles: 1/4 in. VCR® split-nut connections, 1/4 in. and 3/8 in. butt weld connections
Integral Pilot-Operated, Dome-Loaded Pressure-Reducing Regulators (RD[H]20 and RD[H]25 Series)
Specifications
- Dome-to-outlet pressure ratio—1:1
Options
- External feedback (EF) for improved performance
- EF to pilot regulator limited to 290 psig (20 bar)
- EF to main regulator limited by standard outlet pressure range
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
Integral Pilot-Operated, Dome-Loaded Pressure-Reducing Regulators (RD[H]30 and RD[H]40 Series)
Specifications
- Dome-to-outlet pressure ratio—1:1
Options
- External feedback (EF) for improved performance
- EF to pilot regulator limited to 290 psig (20 bar)
- EF to main regulator limited by standard outlet pressure range
- NACE MR0175/ISO 15156-compliant models
- Special cleaning to ASTM G93 Level C
Integral Pilot-Operated, Dome-Loaded Pressure-Reducing Regulators, High Sensitivity (LPRD20, LPRD25, LPRD30, and LPRD40 Series)
Options
- Special cleaning to ASTM G93 Level C
Pressure-Reducing, Dome-Loaded Regulators Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
Features: Pressure-reducing models; Back-pressure models; Spring-, dome-, and air-loaded; 1/4 to 4 in. end connections; Working pressures up to 10 150 psig (700 bar); Temperatures from –4 to 176°F (–20 to 80°C)
Need Help Selecting the Right Regulators?
Compare the performance of different regulators under varying application conditions with our regulator flow curve generator tool.
Find the Right RegulatorSwagelok Resources Curated for You
Managing Supply Pressure Effect (SPE) in a Regulator
Supply pressure effect, also known as dependency, is an inverse relationship between inlet and outlet pressure variables within a regulator. Learn how to manage this phenomenon in your pressure regulators with tips from Swagelok.
How Thorough Testing Ensures Reliable Regulator Performance
Have you ever wondered what testing goes into a product designed to operate in extreme conditions? Take a look behind the lab doors, following the development journey of RHPS Series industrial regulators rated for use at temperatures well below zero.
How to Flatten a Regulator Flow Curve to Reduce Droop
Droop is an issue for every pressure-reducing regulator. Learn how to minimize droop and flatten regulator flow curves with various dome loaded regulator configurations.
How to Use a Regulator to Reduce Time Delay in an Analytical Instrumentation System
Time delay is often underestimated or misunderstood in analytical systems. One way to mitigate this delay is with a pressure-controlled regulator. Learn how to manage your analytical system’s time delay with these tips.