Polymer manifold REHAU RAUTHERM SPEED HKV-P 3 with 17 mm connector

REHAU RAUTHERM SPEED HKV-P 3 is a polymer manifold engineered for underfloor heating and hydronic distribution systems. Configured as a three-way manifold with a 17 mm connector, the unit provides compact flow distribution and reliable connection for circulating heating circuits in residential and light commercial installations. The manifold is made from polymer materials chosen for corrosion resistance and lightweight handling, allowing straightforward integration into RAUTHERM SPEED piping systems and similar polymer-based networks.

Advantages

The polymer construction offers resistance to corrosion and scale formation and reduces overall weight compared with metal alternatives, simplifying installation and transport. The three-way configuration with a dedicated 17 mm connector ensures secure pipe attachment and predictable hydraulic behavior in small multi-circuit installations. The compact footprint supports space-saving layouts in plant rooms and shallow service cupboards, while compatibility with standard underfloor heating components enables straightforward connection to actuators, valves and flow meters commonly used in hydronic circuits.

Suitable for

• Domestic underfloor heating systems with up to three circuits
• Light commercial hydronic distribution where compact manifolds are required
• Retrofit projects using polymer piping and RAUTHERM SPEED systems
• Applications requiring corrosion-resistant, low-weight manifold components

Key specifications

• Manifold type: three-way polymer manifold for distribution and return
• Connector size: 17 mm pipe connection
• Material: engineered polymer with corrosion-resistant properties
• Intended use: underfloor heating and low-temperature hydronic circuits
• Footprint: compact design for space-constrained installations

How to use

Install the manifold on a flat, stable support according to local plumbing and heating standards. Connect supply and return piping using the 17 mm connector and ensure proper insertion depth and secure fittings per the pipe manufacturer’s guidance. Balance the circuits by setting flow rates and, where applicable, fit compatible actuators, flow meters or shut-off valves to each branch. Pressure-test the assembled system and commission following the hydronic system procedures to verify absence of leaks and correct hydraulic performance.

Usage recommendations

Use compatible polymer piping and fittings, and follow REHAU system instructions for pipe preparation and connection. Prefer mounting locations that allow access for commissioning and maintenance. For best long-term performance, operate the manifold within recommended fluid temperature and pressure ranges for polymer components and follow regular inspection schedules for connections and actuators.