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AC-R - Gas Pressure Regulator

Brand: Thermon Heating Systems

The Cata-Dyne™ line of Gas Pressure Regulators are designed to provide precise control of gas or propane flow, and are part of the piping system connected to the Cata-Dyne™ heaters. There are three types of regulators available, suitable for different applications.

The Appliance Regulator controls the manifold pressure on Cata-Dyne™ heaters fuelled by natural gas. The Service or Low Pressure Regulator works with all Cata-Dyne™ heater models operating on LPG or natural gas. It serves as a natural gas low pressure line regulator when used in conjunction with the gas appliance regulator. 

The High Pressure Regulator has a similar function to the Low Pressure, but features much higher maximum inlet and outlet pressures, and is installed upstream of any other regulators provided.

Standard Appliance Regulator (AC-R-ES404-7)
  • The appliance regulator is used for controlling the manifold pressure on all natural gas Cata‑Dyne™ heaters and is supplied with all CSA certified models
  • It is a spring type, nonadjustable appliance regulator with a maximum inlet pressure ½ psig
  • Available pressure outlet settings are: 3.5", 4.5" and 7.0" w.c.
  • Maximum flow capacity: 65,000 Btu/hr
  • Certifications
    • Appliance regulators are CSA approved
Standard Service or Low Pressure Regulator (AC-R-2511)
  • Used as an appliance regulator for all model sizes of Cata‑Dyne™ heaters operating on LPG, and serves as a natural gas low pressure line regulator when used in conjunction with the ES-404 gas appliance regulator
  • Self-operated, spring loaded device that is field adjustable
  • It has a maximum inlet pressure of 250 psig and is factory set at 11" w.c. or 4.5" w.c. outlet pressure, with a connection size of 1/4" NPT inlet by 3/8" NPT outlet
  • For gas applications with inlet gas less than 25 PSI use service regulator AC-R-HSR or AC-R-325
  • Ambient temperature range: -40° to 55° C (-40° to 130° F) or -29° to 70° C (-20° to 160° F) (Fisher regulator only)
  • 1/8" NPT screwed vent connection is provided
  • Certifications
    • Low pressure regulators are CSA approved
High Pressure Regulator (AC-R-1301F)
  • Maximum pressure of 6,000 psig inlet pressure and is factory set at 50 psig outlet pressure
  • Connection size is 1/4" NPT (one inlet and two outlets)
  • Certifications
    • High pressure regulators are UL listed
Features
  • All regulators are designed to ensure there is a precise control of gas or propane flow
  • The regulators are part of the piping system connecting to the Cata‑Dyne™ units, see installation and operating instructions for precise configuration
  • The following three types of regulators are available: Appliance Regulators, Service or Low Pressure Regulators and High Pressure Regulators

1 - 7 of 7 Part Numbers
AC-R-1301F
AC-R-1301F
THERMON High Pressure Regulator
AC-R-2511
AC-R-2511
THERMON Standard Service or Low Pressure Regulator
AC-R-325-3
AC-R-325-3
THERMON Low Pressure Regulator 5 psig - 11" WC (2.7 kPa)
AC-R-325-US
AC-R-325-US
THERMON Low Pressure Regulator - CSA Approved 5 psig - 4-12" WC (1.0 to 3.0 kPa)
AC-R-ES404-7
AC-R-ES404-7
THERMON Standard Appliance Regulator
AC-R-HSR-11
AC-R-HSR-11
THERMON Low Pressure Regulator 125 psig - 11" WC (1.1 kPa)
AC-R-HSR-5
AC-R-HSR-5
THERMON Low Pressure Regulator 125 psig - 4.5" WC (1.1 kPa)
1 - 7 of 7 Part Numbers

Specifications

Agency Approvals

  • CSA
  • UL

Media

  • Natural Gas
  • Propane

Flow Capacity

  • Standard Appliance Regulator: Max. 65,000 BTU/hr

NPT Connection

  • Standard Service or Low Pressure Regulator: 1/4” NPT Inlet by 3/8” NPT Outlet
  • High Pressure Regulator: 1/4” NPT (One Inlet and Two Outlets)

Pressure

  • Standard Service or Low Pressure Regulator: Inlet Max. 250 psig, Factory Set Outlet 11” W.C. or 4.5” W.C.
  • Standard Appliance Regulator: Outlet Factory Set 3.5”, 4.5” and 7.0” W.C.
  • High Pressure Regulator: Max. 6,000 psig Inlet, Factory Set 50 psig Outlet
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