This genuine Seeley International 2-stage 24V gas valve is a direct replacement part designed for specific Seeley heating systems. It helps HVAC techs and competent owners restore reliable and efficient operation to gas-fired units, especially important during a chilly Australian winter.

Getting the right gas valve is crucial; a faulty one can lead to inconsistent heating or even lockout, making diagnosis a real head-scratcher if you don't start with the basics.

Best For

• HVAC technicians
• Gas fitters
• Service and maintenance teams
• Competent DIY owners maintaining their own Seeley systems (with appropriate licensing where required)

Compatibility

This gas valve is engineered as a direct replacement for 2-stage, 24V heating systems within the Seeley International range. It's vital to confirm compatibility with your specific appliance model and original part number before purchase.

If you're running a different model, check fittings and specs before ordering.

Features

• Reliable 2-Stage Operation: Provides precise control over gas flow, allowing the heating system to modulate between two heat output levels.
• Standard 24V Control: Integrates seamlessly with typical low-voltage HVAC control systems.
• Genuine Seeley Part: Manufactured to original equipment specifications for a secure fit and dependable performance.
• Consistent Gas Flow: Designed to ensure steady and efficient fuel delivery to the burner.

Technical Specifications

What's in the Box

• 1x Seeley International 2-Stage 24V Gas Valve (SY628377)

Using It on the Job

1. Before any work, always isolate the main power supply to the heating unit and ensure the gas supply is turned off at the meter or appliance valve. Implement lockout/tagout procedures.

2. Ventilate the work area thoroughly and use an approved gas leak detector to confirm no residual gas is present before disconnecting old components.

3. Carefully disconnect all wiring and gas lines from the existing valve, making clear notes or taking photos of their positions for accurate reinstallation.

4. Install the new Seeley International gas valve, ensuring all connections are properly aligned, tightened to manufacturer specifications, and sealed with an approved gas-rated thread sealant.

5. Restore the gas supply slowly and perform a comprehensive leak test with detection fluid on all new and disturbed connections before restoring electrical power.

6. Test the heating unit's operation through both its low and high fire stages to confirm correct ignition, stable flame, and proper temperature control.

Limitations & Safety Notes

• Installation and service of gas appliances must always be performed by a licensed gas fitter in Australia.
• Always ensure the gas supply is fully isolated and verified before commencing any work on gas components.
• This valve is designed for specific 2-stage, 24V applications. Do not use in systems outside these parameters without explicit manufacturer confirmation.
• Adhere strictly to all local gas regulations, Australian Standards, and Safe Work Australia guidance for gas appliance servicing.

Tradie Pro Tip

When replacing a gas valve, it's good practice to also inspect the burner assembly, igniter, and flame sensor for wear. Addressing other potential issues concurrently can prevent future call-backs and improve overall system reliability.

Pair With

Pair with a sensitive gas leak detector and new gas-rated thread sealant for a safe and complete installation. Consider adding a general HVAC multimeter to your kit for precise voltage checks.