Honeywell VK4105M5157 gas valve

The gas valve from the manufacturer Honeywell VK4105M5157U participates in the control and ignition of the burner. Also, this regulator provides reliable ignition and gas flow control for the pilot and main burner. This valve includes a built-in VK4105M 5157U gas valve and an ignition regulator.

The Resideo VK4105 M 5157U gas solenoid valve has a standard housing and provides many settings, such as:

1. Regulation using a throttle valve.
2. Gradual adjustment with the possibility of adjustment for various control methods.
3. Start with smooth ignition, using innovative SOFTLITE technology.
4. Pressure control by servo drive.
5. Regulation of the mixture of gas and air in a ratio of 1:1.
6. Electric two-level control mechanism.

The Honeywell VK4105M5157B gas regulator is equipped with two electrical devices:

• precise control of the main valve;
• constant monitoring of the valve position.

This regulator works with different types of gases:

1. heating
2. liquefied
3. natural

Standard operating conditions

1. The Honeywell VK4105M 5157B gas valve operates at rated voltage and is installed in an upright position for optimal performance.
2. The inlet pressure of the gas is nominally 25 millibars with dry air and a stable temperature of 20°C.
3. The medium maintains a temperature of 20°C.
4. The diameter of the diaphragm is 2.8 millimeters.
5. The ambient pressure remains at 1013 millibars, ensuring reliable operating conditions.
6. The output pressure is recorded using a sensor connected to a pipe with a diameter of 1/2 inch, 10 times the diameter, through a short hose with a length equal to 5 pipe diameters.
7. Gas consumption is measured in cubic meters per hour for maximum accuracy.

General features

The inlet and outlet of the VK4105 M 5157B gas solenoid valve have a diameter of 18.6 millimeters and are connected via flanges. There are different models of this gas valve with different levels of closing force, such as:

• B + C
• B + B
• B + J

At the inlet of the valve Honeywell VK4105M5157 there is a built-in fine-mesh filter, not intended for cleaning. If necessary, an additional output filter can be installed. At the bottom of the valve there are holes for mounting to the installation.

There are variants of gas regulators with a side outlet for the main and pilot burners. But such a side outlet can only be used with the flange collector of the burner. In addition, at the output of the VK4105M 5157 regulator there is a connection for pilot gas with a diameter of 4 mm. It is also possible to install pressure measuring fittings using silicone tubes with a diameter of 4 or 6 mm.

There is a choice of different types of electrical connections, such as connecting to the ignition regulator via a connector or using a plug-in rectifier unit for standard DBI ignition systems. Options for operation at a voltage of 24V are also available for best compatibility with various ignition regulators, with the exception of the S4565/S4585 series regulators.

The principle of operation

VK4105 M 5157 gas regulators have a positive feedback system (automatic closing of the main valve in case of lack of power supply or excess gas pressure). The system includes a high-tech pressure servo controller and a pressure relief valve that cooperate with each other. When the power supply is supplied, the gas passes through the servo controller and 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 changes in the input pressure, and emphasizes its reliability in operation.