The TGV654 two-stage combined gas valve has been developed for use in both direct spark ignition and hot-surface ignition systems. The valve is also equipped with a pressure regulator and an electrically actuated solenoid shutoff to control the gas flow to the main burner.

Two-stage combined gas valve TGV654

The TGV654 two-stage combined gas valve has been developed for use in both direct spark ignition and hot-surface ignition systems. The valve is also equipped with a pressure regulator and an electrically actuated solenoid shutoff valve to control the gas flow to the main burner.

Technical Data

General unit data

Installation Instructions

Main gas connection

• To prevent deformation and/or damage to the external threads, be careful not to over-tighten the pipe fitting.

• Ensure the washer is properly positioned in the correct location.

• Ensure that the airflow direction is the same as the arrow direction on the valve body.

Pressure regulator adjustment

• Turn off all power to the system.

• When inspecting the pressure test point, loosen the screw by half a turn, then slide the tube over the nipple.

• Turn on the power and energize the main solenoid. Do not energize the HI solenoid valve.

• Remove the low-outlet cover screw, turn it clockwise to increase pressure, or counterclockwise to decrease pressure. Replace the low-outlet cover screw.

• The main solenoid and the HI solenoid are energized.

• Remove the high outlet cover screw, turn it clockwise to increase pressure, or counterclockwise to decrease pressure. Replace the low outlet cover screw.

• Turn off all power to the system.

• Remove all hoses from the test points and re-tighten the low- and high-pressure outlet cover screws.

• Turn on the system power and energize the valve.

• Use a leak detection solution or soapy water. Inspect the pressure boss screws and pressure taps for leaks.

External dimensions

Dimensions (mm)

• 燃气阀