Chemelex / Raychem QTVR
Heating cables and assemblies · Process temperature maintenance
QTVR addresses duties including larger pipes and vessels with higher heat losses. Pro Therm compares the required heat with cable output at the actual temperature. Insulation and fittings can also substantially affect the cable quantity required.
01
Selection for your plant
Tell us whether steam cleaning is planned. Maintain temperature alone does not describe this additional exposure.
Tell us whether steam cleaning is planned. Maintain temperature alone does not describe this additional exposure.
03
Replacement using existing system data
Send the full marking and, where possible, photographs of the installed component. Include quantity, location and requested date. We identify the part against the …
Send the full marking and, where possible, photographs of the installed component. Include quantity, location and requested date. We identify the part against the existing plant and agree a specific construction with you.
05
Explore this range
Chemelex / Raychem → More products in this group → Open product and spare-part finder →
07
Standards and technical basis
Our knowledge section explains how the standards relate to the heating task, product selection and project design. Open the standards overview →
Our knowledge section explains how the standards relate to the heating task, product selection and project design.
09
Define the version and requirement
Tell us whether steam cleaning is planned. Maintain temperature alone does not describe this additional exposure. Specify version and enquire →
Tell us whether steam cleaning is planned. Maintain temperature alone does not describe this additional exposure.
02
Output and circuit selection
A self-regulating cable’s output depends on temperature. Heat loss and the cable output curve must be compared under matching conditions. Cold start, maximum circuit …
A self-regulating cable’s output depends on temperature. Heat loss and the cable output curve must be compared under matching conditions. Cold start, maximum circuit length and protection are assessed separately. Self-regulation does not replace the review of controls, electrical protection and permitted operating conditions.
04
Support from Pro Therm
You can request supply together with advice, design or replacement support. For electric heat tracing, Pro Therm has its own installation teams working internationally. …
You can request supply together with advice, design or replacement support. For electric heat tracing, Pro Therm has its own installation teams working internationally. Thermal insulation can be offered with partner companies. The appropriate scope is agreed for your project.
06
Manufacturer documentation
Product classification is based on the linked manufacturer source. For a specific version, use the current datasheet and installation instructions. Source reviewed: 16 …
Product classification is based on the linked manufacturer source. For a specific version, use the current datasheet and installation instructions. Source reviewed: 16 October 2026.
08
Frequently asked questions
Can I enquire about this product directly? First specify the version and quantity in the product finder. For heating cables, provide voltage and output or explicitly …
Can I enquire about this product directly?
First specify the version and quantity in the product finder. For heating cables, provide voltage and output or explicitly request technical selection. Then enter your contact details and submit the form.
Can another manufacturer’s product be considered?
An alternative may be offered after technical review. Output, temperature limits, connections and existing system requirements are assessed together. Cross-brand interchangeability is not assumed.
10
Related topics
Self-regulating cables → Spare parts → Engineering and design →
Output and circuit selection
A self-regulating cable’s output depends on temperature. Heat loss and the cable output curve must be compared under matching conditions. Cold start, maximum circuit length and protection are assessed separately. Self-regulation does not replace the review of controls, electrical protection and permitted operating conditions.
Replacement using existing system data
Send the full marking and, where possible, photographs of the installed component. Include quantity, location and requested date. We identify the part against the existing plant and agree a specific construction with you.
Support from Pro Therm
You can request supply together with advice, design or replacement support. For electric heat tracing, Pro Therm has its own installation teams working internationally. Thermal insulation can be offered with partner companies. The appropriate scope is agreed for your project.