Vaillant 0020068956 Connection tube, (kit)

The Vaillant 0020068956 Connection Tube is a hydraulic spare part manufactured by Vaillant for use inside their heating appliances. It forms part of the water circuit, carrying flow between internal components so the appliance can circulate and deliver hot water as designed.

As a hydraulic component it sits within the wet side of the unit, where scale, heat cycling and vibration eventually take their toll on joints and walls. Replacing a tired tube restores the intended flow path and helps the appliance maintain dependable performance.

• Water weeping or tracking along the tube, with damp or staining around the joint
• Visible corrosion, pitting or a chalky scale deposit on the tube wall
• Reduced flow or uneven hot water delivery traced to a restricted internal pipe
• Discolouration or heat damage on the tube where it passes close to a hot component
• A joint that will not seal after re-making, indicating a distorted or cracked tube end

• Confirm the model and serial details on the appliance data badge match this part number
• Compare the number on the existing tube with 0020068956 before removing it
• Inspect the associated seals and washers, as these are often disturbed when a tube is removed
• Work on the hydraulic circuit should only be carried out by a competent engineer, with the appliance isolated and drained first