The Midtherm HTS TW/SW Adaptor is a premium component designed to seamlessly connect the top of a twin-wall system to a single-wall system (stove pipe) or a flexible adaptor. Crafted with precision and backed by cutting-edge manufacturing techniques, this adaptor is a must-have for efficient and safe flue system installations.
Engineered for longevity, it forms part of the Midtherm HT-S Twin Wall High-Temperature Insulated Flue System, offering unmatched durability with a 20-year warranty when registered and maintained as per guidelines. Its sleek, modern design ensures not only functionality but also an aesthetic appeal that complements any installation.
Built with superior materials, the adaptor features a 0.5mm 316 stainless steel inner and 0.5mm 304 BA outer, guaranteeing exceptional strength and resistance to high temperatures. It supports a variety of fuel types, including wood, multifuel, gas, oil, biomass, and pellets, with an impressive operating temperature of up to 450°C and a 4-hour fire rating.
Midtherm’s laser-welded seams and machine-formed joints ensure a consistent, leak-proof fit, while the included locking bands provide added security. Manufactured under ISO 9001 accredited quality systems and CE-certified, this adaptor reflects the highest standards of quality and safety.
With HETAS certification, the Midtherm HTS TW/SW Adaptor is a reliable choice for professional installations.
Key Features
- Efficient Maintenance: The appliance connector includes a convenient sweeping access point, simplifying routine cleaning and upkeep.
- High-Temperature Performance: Rated for continuous operation at 450°C and a 4-hour fire rating, making it suitable for a wide range of fuels.
- Durable Construction: Manufactured with 0.5mm 316 2b stainless steel for the inner layer and 0.5mm 304 BA stainless steel for the outer layer, ensuring long-lasting durability.
- Secure Connection: Locking bands are included on all components with male connectors, providing a consistent and secure fit.
- Versatile Compatibility: Designed for use with wood, multifuel, gas, oil, biomass, and pellets, offering flexibility for various heating systems.
Midtherm HTS Twin Wall System
The TW / SW Adaptor is part of the Midtherm HTS Twin Wall High-Temperature Insulated Flue System, renowned for its:
- Laser-welded seams and machine-formed joints for a seamless, reliable connection.
- CE Certification and HETAS registration, reflecting superior quality and safety.
- Manufacturing under ISO 9001 accredited quality management systems.
- Suitable for; Wood, Multifuel, Gas, Oil, Biomass, Pellets
Peace of Mind Warranty
Enjoy a 20-year warranty with registered and properly maintained HT-S installations, demonstrating Midtherm’s commitment to quality and reliability.
Specifications:
- Operating Temperature: 450°C
- Material: Stainless steel inner (0.5mm 316 2b) and outer (0.5mm 304 BA)
Joint Type
Push fit socket and spigot type joint, to be installed with a locking band in place.
Downloads:
- Specification Sheet/ Manual: Midtherm_HTS_manual
- Brochure: QF-34-08-BRO24A
- Warranty: QF-34-08-WARA-23A-1






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