PUF bellows expansion joints
A PUF bellows expansion joint is designed to compensate for thermal expansion and to absorb vibrations which are generated during the operation of a heating main. Installing this structure will safeguard the pipeline from premature wear and axial deformation.
The main element of a bellows expansion joint for heating networks is the bellows made from a thin steel sheet covered with a corrosion-resistant coating. For this reason, this item is often referred to as the bellow compensation device (BCD). The compensation is achieved due to the flexibility and freedom of movement of the bellows element. The manufacturing process of a bellows expansion joint in PUF insulation consists in welding straight guiding pipe runs to the steel bellows on both sides. Next, the complete structure is insulated with PUF and placed inside a ZP or PE protective casing. The copper conductors inside the product provide the RRCS functionality.
The PUF BCD bellows expansion joint is easy to install and almost maintenance-free. Its compensation properties are much higher than those of the U- or Z-shaped joints. The joint’s performance depends on its design and the number of bellow sections. These parameters are determined individually for each project. If the line is installed outdoors, the compensating link is mounted between fixed supports in a straight section of the heating network. If the line is laid using the trenchless method, the device is placed in the middle of the span between supports.
The price of bellows expansion joints for PUF pipes primarily depends on the product brand (manufacturer) and on the confining protective structure. Please also pay attention that bellows produced in Russia and Turkey are more expensive that the Chinese alternatives, however, they have a much longer life time.
For prices for PUF bellows expansion joints, please check the Catalog section. You can place the order and arrange the delivery online at our web-site. With the order, please inquire about the availability of the protective enclosure and the required guides.
Q&A
- Certificate of quality for the batch of products in original..
- Complete list of certificates, including quality certificates, on the materials, feedstocks and components used to manufacture a specific batch of products.
- Report on all the performed tests.
- Certificate of compliance with GOST 30732-2020.
- CMR.
- Consignment note.
- VAT invoice.
- Upon the customer’s request, we can provide the Universal transfer document (UTD).
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