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AQUATROL

AQUATROL is a manufacturer of pressure relief valves serving industrial fluid handling and steam system applications. The product line includes both non-code adjustable relief valves for air, inert gas, and liquids, as well as ASME Section VIII certified safety relief valves for steam service. Non-code models, such as the 69 series, are constructed from bronze with MNPT x FNPT connections and are available in sizes from 3/4 inch to 1 1/2 inch, with maximum operating pressures of 125 psi or 250 psi. These valves are adjustable, allowing end users to set the relief pressure within a specified range, making them suitable for general overpressure protection in pneumatic and hydraulic systems where code compliance is not required. The ASME Section VIII steam safety relief valves, represented by the 740 series, are also bronze-bodied with MNPT x FNPT connections, available in 1 1/2 inch and 2 inch sizes, and rated to a maximum operating pressure of 364 psi. These valves are designed for steam boiler and pressure vessel applications where compliance with ASME Boiler and Pressure Vessel Code Section VIII is mandatory. AQUATROL valves are characterized by their bronze construction, which provides corrosion resistance in many water, steam, and non-aggressive fluid environments. The product range covers a spectrum of set pressure capabilities and connection sizes, enabling selection for specific system requirements. 3G Electric stocks a selection of AQUATROL pressure relief valves, including both non-code adjustable and ASME Section VIII certified models, to support maintenance, retrofit, and new installation projects across industrial facilities. The inventory includes common sizes and pressure ratings to address typical overpressure protection needs in plant operations. For applications requiring specific set pressures or non-standard configurations, 3G Electric can provide information on available options within the AQUATROL product family. The valves are supplied with standard NPT threaded connections for straightforward installation into existing piping systems. AQUATROL's focus on bronze pressure relief valves makes them a relevant choice for engineers and procurement specialists specifying overpressure protection in steam, air, and liquid systems where material compatibility and code compliance are factors.

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About AQUATROL

AQUATROL is a manufacturer of pressure relief valves serving industrial fluid handling and steam system applications. The product line includes both non-code adjustable relief valves for air, inert gas, and liquids, as well as ASME Section VIII certified safety relief valves for steam service. Non-code models, such as the 69 series, are constructed from bronze with MNPT x FNPT connections and are available in sizes from 3/4 inch to 1 1/2 inch, with maximum operating pressures of 125 psi or 250 psi. These valves are adjustable, allowing end users to set the relief pressure within a specified range, making them suitable for general overpressure protection in pneumatic and hydraulic systems where code compliance is not required. The ASME Section VIII steam safety relief valves, represented by the 740 series, are also bronze-bodied with MNPT x FNPT connections, available in 1 1/2 inch and 2 inch sizes, and rated to a maximum operating pressure of 364 psi. These valves are designed for steam boiler and pressure vessel applications where compliance with ASME Boiler and Pressure Vessel Code Section VIII is mandatory. AQUATROL valves are characterized by their bronze construction, which provides corrosion resistance in many water, steam, and non-aggressive fluid environments. The product range covers a spectrum of set pressure capabilities and connection sizes, enabling selection for specific system requirements. 3G Electric stocks a selection of AQUATROL pressure relief valves, including both non-code adjustable and ASME Section VIII certified models, to support maintenance, retrofit, and new installation projects across industrial facilities. The inventory includes common sizes and pressure ratings to address typical overpressure protection needs in plant operations. For applications requiring specific set pressures or non-standard configurations, 3G Electric can provide information on available options within the AQUATROL product family. The valves are supplied with standard NPT threaded connections for straightforward installation into existing piping systems. AQUATROL's focus on bronze pressure relief valves makes them a relevant choice for engineers and procurement specialists specifying overpressure protection in steam, air, and liquid systems where material compatibility and code compliance are factors.

Common Applications

  • Industrial compressed air systems — AQUATROL 69 series non-code adjustable relief valves for overpressure protection on air receivers and piping.
  • Steam boiler pressure vessels — AQUATROL 740 series ASME Section VIII safety relief valves for code-compliant steam overpressure relief.
  • Hydraulic fluid circuits — AQUATROL 69 series non-code adjustable relief valves for pressure limiting in liquid systems up to 250 psi.
  • Inert gas blanketing systems — AQUATROL 69 series non-code adjustable relief valves for pressure control on nitrogen or argon lines.
  • Process water piping — AQUATROL 69 series non-code adjustable relief valves for thermal expansion or pump discharge overpressure protection.
  • Steam distribution headers — AQUATROL 740 series ASME Section VIII safety relief valves for protecting steam mains and branch lines.

Frequently asked questions

Common questions about AQUATROL from 3G Electric.

What is the difference between AQUATROL non-code adjustable relief valves and ASME Section VIII safety relief valves?

AQUATROL non-code adjustable relief valves, such as the 69 series, are designed for overpressure protection in air, inert gas, and liquid systems where ASME code certification is not required. They are adjustable and typically used in general industrial applications. AQUATROL ASME Section VIII safety relief valves, like the 740 series, are certified for steam service and comply with the ASME Boiler and Pressure Vessel Code Section VIII. These are mandatory for pressure vessels and steam systems that require code-compliant overpressure protection. The ASME valves have fixed set pressures and are not field-adjustable.

What materials are used in AQUATROL pressure relief valves?

AQUATROL pressure relief valves are constructed from bronze. This material is selected for its corrosion resistance in water, steam, and non-aggressive fluid environments. Bronze also provides good mechanical strength for the pressure ranges these valves are rated for. The valves feature MNPT (male) and FNPT (female) threaded connections, which are standard for NPT piping systems. The bronze body is suitable for many industrial applications, but for aggressive chemical or high-temperature services, material compatibility should be verified against the specific fluid and operating conditions.

What pressure ratings are available for AQUATROL non-code adjustable relief valves?

AQUATROL non-code adjustable relief valves in the 69 series are available with maximum operating pressures of 125 psi and 250 psi. For example, the 69B1A1M2U1-125 is rated to 125 psi, while the 69E1A1M2U1-250 is rated to 250 psi. These valves are adjustable within a range below the maximum pressure, allowing the user to set the relief point as needed. The specific adjustment range depends on the model and spring configuration. For precise set pressure requirements, consult the valve's datasheet or contact 3G Electric for details on available adjustment ranges.

Are AQUATROL ASME Section VIII safety relief valves field-adjustable?

No, AQUATROL ASME Section VIII safety relief valves, such as the 740 series, are not field-adjustable. These valves are factory-set to a specific pressure and sealed to maintain code compliance. The set pressure is indicated in the model number; for example, the 740GF1M2J1-50 is set to 50 psi. Attempting to adjust an ASME-certified valve in the field would void its certification and could lead to non-compliance with pressure vessel codes. If a different set pressure is required, a valve with the appropriate factory setting must be selected.

What connection sizes are available for AQUATROL pressure relief valves?

AQUATROL pressure relief valves are available with MNPT x FNPT threaded connections. For non-code adjustable relief valves (69 series), sizes include 3/4 inch x 3/4 inch and 1 1/2 inch x 1 1/2 inch. For ASME Section VIII steam safety relief valves (740 series), sizes include 1 1/2 inch x 1 1/2 inch and 2 inch x 2 inch. All connections are NPT (National Pipe Thread) standard, which is common in industrial piping systems. The valve inlet and outlet are the same size for the models listed.

Can AQUATROL non-code relief valves be used for steam service?

AQUATROL non-code adjustable relief valves are specified for air, inert gas, and liquids. They are not recommended for steam service unless explicitly stated in the product documentation. For steam overpressure protection, AQUATROL offers ASME Section VIII certified safety relief valves (740 series) that are designed and certified for steam applications. Using a non-code valve on steam could result in improper operation or failure, as steam requires specific design considerations for temperature and phase change. Always select a valve rated for the specific fluid and service conditions.