For a more efficient bleeding experience for your cooling system, consider using our specially designed hose connectors with built-in bleed. These connectors are suitable for small heater hoses from 13 mm OD to 19 mm OD (outside diameter). The bleed mechanism is a M 5 stainless set screw. Simply attach the connector to the outlet side of your heater by splicing it into the rubber hose and securing with a hose clip. Loosen the bleed screw to allow air to escape from the system until water or coolant comes out, then tighten. We also offer larger connectors with bleed for top hoses measuring 22-38mm.
