Honeywell VK4105G1229 gas valve

SKU: VK4105G1229U, 534.331.108

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The Honeywell VK4105G1229U gas regulator is an integral part of the burner control and start-up system, ensuring safe start-up, reliable flame maintenance and accurate gas flow control for both the pilot and main burner. It includes a reliable gas valve VK4105G 1229U and a high-tech ignition regulator that connects to it.

The Resideo VK4105 G 1229U valve stands out for its standard body and provides a wide range of settings, including:

• Precise pressure control using an innovative servo drive.

• Smooth and reliable ignition thanks to the unique SOFTLITE technology.

• Accurate regulation of the mixture of gas and air in an optimal ratio of 1:1.

• Electronic two-level regulator for maximum efficiency.

• Smooth and flexible regulation with the ability to adapt to different control methods.

The VK4105G1229B gas regulator includes two electronic devices: one is designed for precise control of the main valve, and the other serves for continuous monitoring of its position. This electromagnetic gas valve does an excellent job with various types of gases, including heating, natural and liquefied.

Operating conditions in standard mode

  1. The nominal pressure of the inlet gas is 25 millibars with dry air and a stable temperature of 20°C, ensuring reliable operation.
  2. The ambient pressure remains at 1013 millibars, ensuring stable conditions.
  3. Gas consumption is measured in cubic meters per hour for maximum accuracy.
  4. The output pressure is recorded using a highly sensitive sensor connected to a 1/2-inch diameter pipe 10 times the diameter through a short hose with a length equal to 5 pipe diameters.
  5. The Honeywell VK4105G 1229B gas valve operates with outstanding performance at rated voltage and is installed in a vertical position for maximum efficiency.
  6. The aperture has an optimal size of 2.8 millimeters for outstanding performance.

General characteristics

The VK4105 G 1229B gas solenoid valve combines all the safety and burner control functions in a carefully designed system. The inlet and outlet of the valve have a diameter of 18.6 millimeters and are easily connected via flanges. Different models with different levels of closing force are available, such as B+ J, B+C, B+B, to meet a variety of needs.

A built-in fine-mesh filter is installed at the inlet of the Honeywell VK4105G1229 gas regulator, which serves as an additional safety element. If necessary, an additional output filter can be installed. Special holes are provided in the lower part of the valve for secure attachment to the installation.

There is a choice of different types of electrical connections, including connection to the ignition regulator via a special connector or the use of a plug-in rectifier unit for standard DBI ignition systems. In addition, 24 V operation options are available for maximum compatibility with various ignition regulators, with the exception of the S4565/S4585 series regulators, to meet the most stringent requirements.

The principle of operation

Regarding the principle of operation, the Resideo VK4105G 1229 gas regulators use an innovative positive feedback system. This system provides automatic closure of the main gas valve in case of power loss or excess gas pressure. It consists of a high-tech pressure servo controller and a pressure relief valve that interact together.

When the power supply is applied, the gas passes through the servo controller, which opens the main valve. The system then maintains a constant pressure by regulating the operation of the main valve. This ensures a stable output pressure even with input pressure changes, ensuring reliability and safety in operation. In case of emergency situations, such as power loss or excess gas pressure, the pressure relief valve is activated, which leads to the automatic closure of the main valve, providing an additional level of safety.

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