Testo Pressure Connection Hose, 4/6mm x 50cm

This Testo single pressure connection hose (0554 0449) is purpose-built for accurate gas pressure measurements on heating systems. At 50cm long with a 4/6mm diameter, it's just the right length for those tight spots in boiler rooms or plant rooms, making your job easier when you're checking gas lines.

It comes ready with a connection adapter, meaning less fumbling around with extra bits when you're on site. A solid piece of kit for any tech doing gas system diagnostics.

Best For

• Gas plumbers and technicians
• Heating system installers and service teams
• HVAC technicians performing boiler or furnace maintenance

Compatibility

This pressure connection hose is designed for gas pressure measurement applications, specifically on heating systems. It's compatible with Testo differential pressure measuring instruments, such as the Testo 312-4 mentioned in the related product information. Its 4/6mm diameter is standard for many residential and light commercial heating setups.

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

Features

• Optimal Length: 50 cm length provides flexibility without excessive slack.
• Standard Diameter: 4/6 mm hose diameter for common heating system connections.
• Dedicated Use: Specifically designed for precise gas pressure measurement.
• Connection Adapter: Includes a connection adapter for direct setup.

Technical Specifications

What's in the Box

• 1 x Testo single pressure connection hose, 4/6 mm diameter, 50 cm long, with connection adapter (SKU: 0554 0449)

Using It on the Job

1. Safety First: Before connecting, ensure the heating system's gas supply is isolated and the area is well-ventilated.
2. Connect to Instrument: Securely attach one end of the hose to your Testo differential pressure measuring instrument's port.
3. Attach to System: Connect the other end of the hose, with its adapter, to the gas test point on the heating system. Ensure connections are tight to prevent leaks.
4. Perform Test: Conduct your required gas pressure checks according to manufacturer and local regulations, observing stable readings.
5. Disconnect & Store: Carefully depressurise if necessary, then disconnect the hose, ensuring no gas leaks. Clean the hose and store it properly to prevent damage.

Limitations & Safety Notes

• This hose is strictly for gas pressure measurement; it is not rated for high-pressure refrigerant or liquid lines.
• Always ensure all connections are properly sealed and leak-tested before applying pressure.
• Refer to relevant Australian Standards and Safe Work guidance for gas fitting and pressure testing.
• Regularly inspect the hose for any signs of wear, cracks, or damage, and replace if necessary.

Tradie Pro Tip

When testing gas lines, always do a quick visual check of your hose and fittings for any nicks or wear before you start. Even a tiny pinhole leak on the hose can throw off your readings and make you chase ghosts on a call-out. Better to replace it early than get a false positive.

Pair With

Pair this hose with Testo differential pressure gauges, flue gas analysers, and other heating system diagnostic tools to complete your kit for comprehensive system checks.