The TF1 Sigma UB Filter is an expertly engineered composite under boiler system filter, perfect for installations in confined areas with hidden pipework. Its compact and versatile design allows for effortless fitting directly under boilers or in tight spaces, making it an ideal choice for installers with limited access.

With a high-capacity construction crafted from a durable, glass-reinforced engineering polymer and a robust brass manifold, this filter offers superior protection against debris build-up without compromising flow. Featuring an integrated three-way valve for convenient isolation and cleaning, it can replace a return valve if needed, ensuring seamless operation. Its premium-grade neodymium magnet ensures efficient capture of contaminants, safeguarding your heating system's performance and longevity.

• Compact design, ideal for tight spaces
• Designed for under boiler installation
• High efficiency protection against debris
• Durable glass reinforced polymer construction
• Non-porous forged brass manifold
• Integrated valve for easy servicing
• Compatible with system glycols and additives
• Will not block or restrict system flow