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Swagelok Southwestern Ontario

Your Authorized Swagelok Sales and Service Center

At Swagelok, we have the right combination of regulators to fit any situation, and our experts can help you design a configuration that will maintain pressure and minimize droop over a wide range of pressures and flows.

This catalogue covers the features, selection, uses, testing, and cleaning of Swagelok K Series regulators.

  • Back-pressure models

  • Pressure-reducing models

  • Vaporizing models

  • Gas cylinder changeover model

RHPS Series

  • Back-pressure models

  • Pressure-reducing 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)

Swagelok Regulator Assembly Options

  • 1 Series - Integral-Bonnet Needle Valves

  • 40 Series - One-Piece Instrumentation Ball Valves

  • C Series - Check Valves

  • R Series - Proportional Relief Valves

  • Pressure Gauges - Industrial and Process

  • Hoses and Flexible Tubing

  • Kenmac Adjustable Regulator Relief Valves

ms-01-156 Base Cover


HF Series

  • Precise pressure control
  • Tamper-free design
  • High-purity design
  • Preset and adjustable dome-loaded models
MS-06-114 Curves Cover

Pressure-Reducing Regulator Flow Curves Technical Bulletin

A pressure regulator responds to changes in flow demand to maintain a pressure setpoint. As a regulator responds, its throughput changes as a consequence of its adjustments for pressure. The best way to understand this effect is to look at the flow curve of a regulator. For any given pressure setting, there is a flow rate that falls on the flow curve. As the flow rate changes, the regulator will follow along the flow curve to establish a new balance and flow.


flatten flow curve cover

Flattening pressure-reducing regulator flow curves in high-flow systems

When an application calls for maintaining consistent down-stream pressures at high flows, it will most likely require the use of a dome-loaded pressure-reducing regulator. This article explores the theory and application of several control schemes to flatten the flow curve.