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Introducing the PR 1 Ball Valve Set for UFH Manifold ZL-4130. This high-quality 1" ball valve set is designed specifically for underfloor heating manifolds. It's crafted to ensure optimal performance and durability. The PR 1 Ball Valve provides excellent flow control and is easy to install. Perfect for maintaining system efficiency, this set is reliable and built to last. It's precisely engineered to meet all your underfloor heating needs. Choose the PR 1 Ball Valve Set for superior functionality and peace of mind.. Ball Valve Set for Underfloor Heating Manifold - 1 inch JTM UFHMANBV