Connection set for solar stainless steel double pipe BiSolar DN16

Product detailed description

The BiSolar DN16 stainless steel double pipe system is commonly used in solar thermal installations where reliable, corrosion-resistant piping is required. Installers working in residential and commercial solar heating systems will find this connection set essential for ensuring secure and leak-free connections. This product supports integration into closed-loop solar circuits and is suitable for use with circulating pumps and heat exchangers.

Typical applications include flat plate collectors, evacuated tube collectors and storage tank connections. The system is often part of larger solar thermal networks used in domestic hot water production and space heating. Proper installation ensures long-term performance and minimises maintenance requirements in such systems.

Technical parameters

Weight	0.15 kg
Code	804305
Brand	HEWALEX

The connection set contains all necessary components for joining the BiSolar DN16 double pipe. These include a brass fitting with internal 3/4 inch thread, a high-temperature sealing ring and a half-coupling. The parameters ensure compatibility with standard pipe diameters and fittings in solar applications. The materials selected are chosen for their resistance to thermal cycling and chemical exposure within the operating conditions of solar systems.

Installation and connection

Installation requires careful alignment of the stainless steel double pipe ends with the brass fitting. The 3/4 inch threaded fitting should be securely tightened using appropriate tools, while the high-temperature gasket ensures a seal resistant to heat expansion. The half-coupling connects the inner and outer layers of the double pipe, preventing misalignment during operation. One common mistake is under-tightening the fitting, which can lead to leaks. Installers should also verify that the inner and outer layers are correctly seated before final tightening to avoid mechanical stress on the joints.

Compatibility and accessories

This connection set is exclusively compatible with the BiSolar DN16 stainless steel double pipe. For complete installation, four individual sets must be ordered to connect one pair of pipes. Related products such as the Solar Double Pipe BiSolar DN16 and the corresponding stainless steel corrugated pipe are required for full system assembly. The brass fitting is not interchangeable with other pipe types due to specific dimensional tolerances required for the BiSolar design.

Technical background for designers

The BiSolar DN16 system operates as a concentric double pipe, allowing simultaneous flow of fluids through inner and outer channels. The stainless steel construction provides resistance to oxidation and scaling, making it ideal for closed-loop solar systems. The brass fitting provides a durable metal-to-metal interface, while the high-temperature gasket compensates for thermal expansion differences between materials. System efficiency depends on correct alignment and sealing of all joints, as well as the quality of insulation applied to exposed pipe sections after installation.

Service and operation

Daily operation requires no active maintenance for the connection set itself. However, periodic visual inspections should be carried out to detect signs of wear, such as discoloration of the gasket or loosening of the brass fitting. Any detected issues should be addressed immediately to prevent fluid leakage or loss of system pressure. No scheduled service intervals are required unless specified in the overall system maintenance plan.

Frequently asked questions

Can this connection set be used with other types of stainless steel pipe?
No. This set is specifically designed for the BiSolar DN16 double pipe system. Using it with alternative pipe designs may result in misalignment or leakage due to incompatible dimensions.

Is the brass fitting reusable after disassembly?
Yes, provided the threads remain undamaged. Any deformation or wear on the fitting should be checked prior to reuse to ensure a proper seal.

What is the purpose of the high-temperature gasket?
The gasket compensates for thermal expansion differences between the brass fitting and the stainless steel pipe. It also creates a durable seal against fluid leakage under operating temperatures.

How many connection sets are needed per installation point?
Four sets are required to connect one pair of BiSolar DN16 double pipes. Each set serves a separate section of the inner and outer pipe layers.