Radiator Coupler Tworett With Calypso TRV-3 c/c 550mm IMI TA
TA Tworett radiator coupler with Calypso TRV-3 straight valve part and distributor RSD 802. Fits 2-pipe systems, has c/c 550 mm and flow 5–178 l/h.
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Radiator Coupler Tworett With Calypso TRV-3 c/c 550mm IMI TA
Description
TA Tworett radiator coupler with straight valve part Calypso TRV-3 and under-connected distributor RSD 802 is a complete, ready-to-install quality solution developed for water-borne 2-pipe systems. The coupler is adapted for radiators with a center distance of c/c 550 mm and is delivered complete with a rotatable straight valve, connecting pipe and bend, which guarantees smooth installation and clean pipe routing under the element.
The heart of the coupling is the integrated Calypso TRV-3 valve part, which offers stepless presetting and an adjustable flow range of 5–178 liters/hour. This makes it easy to fine-tune and balance the heating circuit with high precision to minimize energy losses, eliminate flow noise and ensure an even and comfortable room temperature.
Made of robust, corrosion-resistant brass with a durable nickel-plated surface, the coupling is designed for a working pressure of up to PN10 (10 bar). It is the perfect choice for both new construction and ROT renovations in villas, apartment buildings and commercial properties where high demands are placed on operational reliability, energy efficiency and aesthetics.
Key features
- Complete radiator coupling: Includes straight Calypso TRV-3 valve part, distributor RSD 802, pipes and bends.
- Precise flow control: Stepless presetting with flow from 5 to 178 l/h.
- Flexible installation: Rotatable straight valve part makes connection to the radiator easier.
- Durable material: Made of corrosion-resistant, nickel-plated brass for a long service life.
- Reliable: Rated for PN10 (max. 10 bar working pressure).
Application & Installation
Suitable for new installation and renovation in villas, apartment buildings and commercial properties with water-borne heating. The under-connection provides a stylish installation where the piping is kept together under the radiator.
Specifications
- Valve part: Calypso TRV-3 (straight)
- Distributor: RSD 802 (under-connected)
- System type: 2-pipe system
- Center distance (c/c): 550 mm
- Flow range: 5 – 178 l/h
- Pressure class: PN 10 (max 10 bar)
- Material: Brass
- Surface treatment / Color: Nickel-plated
- Connection: Threaded / compression fitting (standard R/M22 depending on pipe type)

