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CA-1/CA-2 Back Pressure / Relief Regulator

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The Model CA-1 and CA-2 are compact back pressure regulators designed for controlling inlet pressure by relieving excess pressure. Both models are available with a forged Bronze body or stainless steel (SST) barstock body, making them suitable for various industrial applications. The Model CA-1 can control inlet pressures between atmospheric and 525 psig (36.2 Barg), while the Model CA-2 is designed for pressures up to 610 psig (42.0 Barg). These regulators feature self-aligning plug/seat mechanisms that provide tight shutoff capabilities, ensuring minimal leakage and reliable performance.

  • Specifications
  • Technical Data
  • Advantages
  • Industries
  • Applications
  • Contact

Specifications

Body Material: Forged Bronze or SST Barstock

 

Size:

 

  • Model CA-1: 1/8″ or 1/4″ (DN6 or 8) with NPT female pipe threads
  • Model CA-2: 1/4″, 3/8″, or 1/2″ (DN8, 10, or 15) with NPT female pipe threads

 

Temperature Range:

 

  • SST Diaphragm: -325 to +300°F (-198 to +149°C)
  • Buna-N Diaphragm: -20 to +200°F (-29 to +94°C)
  • Gylon Diaphragm: -325 to +300°F (-198 to +149°C)

 

Maximum Design Pressure:

 

  • Model CA-1: 525 psig (36.2 Barg)
  • Model CA-2: 610 psig (42.0 Barg)

Technical Data

Model CA-1

 

Inlet Pressure Range: Atmospheric to 525 psig (36.2 Barg)

 

Connection Size: 1/8″ or 1/4″ (DN6 or 8) NPT female pipe threads

 

Maximum Design Pressure: 525 psig (36.2 Barg)

 

Temperature Range:

 

  • SST Diaphragm: -325 to +300°F (-198 to +149°C)
  • Buna-N Diaphragm: -20 to +200°F (-29 to +94°C)
  • Gylon Diaphragm: -325 to +300°F (-198 to +149°C)

 

Model CA-2

 

Inlet Pressure Range: Atmospheric to 610 psig (42.0 Barg)

 

Connection Size: 1/4″, 3/8″, or 1/2″ (DN8, 10, or 15) NPT female pipe threads

 

Maximum Design Pressure: 610 psig (42.0 Barg)

 

Temperature Range:

 

  • SST Diaphragm: -325 to +300°F (-198 to +149°C)
  • Buna-N Diaphragm: -20 to +200°F (-29 to +94°C)
  • Gylon Diaphragm: -325 to +300°F (-198 to +149°C)

Advantages

  • Self-Aligning Plug/Seat: The seat ring floats within a mechanically contained zone, ensuring proper alignment and tight shutoff.
  • Tight Shutoff: Lapped seat surfaces allow for leakage rates to approach the levels of composition seats, providing reliable sealing and minimal leakage.
  • Versatile Design: Suitable for various fluids and gases, including air, oil, water, and cryogenic gases, with the exception of steam service.

Industries

  • Fuel Oil Systems: Used as a bypass flow regulator.
  • Cryogenic Gas and Liquid Handling
  • General Industrial Applications: Air, oil, water, and gas services.
  • Sour Gas Service: Suitable for sour gas handling.

Applications

  • Liquid Recirculation Around Pumps: Widely used in systems where maintaining consistent pressure is critical.
  • Bypass Flow Regulation: Ideal for use in fuel oil systems and other applications where excess pressure needs to be relieved.
  • Cryogenic Applications: Effective in both cryogenic gases and liquids, ensuring safe and efficient pressure control.
  • General Services: Applicable for various industrial processes involving air, oil, water, and gas. Not recommended for steam service.

Contact Us

Do you have questions or comments about receiving a quote, our products, solutions and services, and support? Contact us by filling out the form.

  • Brendan Merrigan (External) – Mob: 087 2598124
  • Conor Foley - Tel: 021 461 7206
  • Office Tel: 021 461 7200

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