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The 22mm x 28mm Straight Tundish is a plumbing fitting designed to create a visible air gap in a discharge pipe, allowing fluid to drain while preventing backflow or contamination between systems. It features a funnel-shaped opening that connects two pipes and is commonly used in safety or overflow applications, such as boilers, unvented hot water cylinders, and pressure relief valves. The tundish ensures proper separation between the discharge and the drainage system, allowing for direct, vertical flow from inlet to outlet. It is often installed in systems requiring pressure relief, helping to safely direct overflow while maintaining system hygiene and integrity.. Straight Tundish Black Plastic - 22mm x 28mm JTM TUND219015