Pipe Calibrator

Product detailed description

During installation of radiant heating systems, domestic hot and cold water supply lines, and underfloor heating circuits, PEX-AL-PEX pipes are commonly used for their flexibility and thermal stability. After cutting the pipe to length, the inner diameter may be reduced due to compression from the cut edge. This can affect flow rates and increase pressure drop in the system. A pipe calibrator is essential to restore the original inner diameter and ensure smooth fluid flow. The SHARKS calibrator is a lightweight, hand-operated tool suitable for use in residential, commercial and industrial building projects.

Proper calibration is particularly important in closed-loop systems where consistent flow is required for even heat distribution. In multi-storey buildings or large-scale installations, even small deviations in pipe diameter can accumulate and affect system performance. The tool is designed for use with PEX-AL-PEX composite pipes, which are commonly used in hydronic heating and plumbing applications due to their resistance to thermal expansion and oxygen diffusion. The calibrator ensures that the pipe is ready for fitting installation without deformation or residual compression.

Technical parameters

Function	Calibration of inner diameter and removal of cut edges
Pipe material	PEX-AL-PEX
Suitable pipe diameters	16 / 20 / 26 mm
Weight	0.1 kg
Code	KALIBRATOR NA POTRUBIE
Brand	SHARKS

The calibrator is specifically designed for PEX-AL-PEX pipes with diameters of 16 mm, 20 mm and 26 mm. These sizes are standard for underfloor heating and domestic water supply systems. The tool ensures the inner diameter is restored to its nominal size, which is critical for maintaining hydraulic balance and preventing flow restrictions. The material compatibility is limited to PEX-AL-PEX, which has a layered structure of cross-linked polyethylene, an aluminium layer and a second polyethylene layer. This structure requires a calibrator that can expand the inner diameter without damaging the aluminium layer.

Installation and connection

Before using the calibrator, ensure the cut end of the pipe is clean and free from burrs. Insert the calibrator into the pipe until it reaches the full length of the tool. Apply steady pressure while rotating the tool slightly to evenly expand the inner diameter. Repeat the process if necessary to ensure a smooth and uniform result. After calibration, inspect the pipe for any irregularities or deformations before fitting installation. A common mistake is not calibrating both ends of the pipe, which can lead to misalignment and leakage at the joint. Always use the correct size of the calibrator for the pipe diameter to avoid over-expansion or damage to the pipe wall.

Compatibility and accessories

This calibrator is intended for use with PEX-AL-PEX pipes only. It is typically used in conjunction with PEX-AL-PEX fittings such as compression or push-fit connectors. For sealing and thread protection, it is recommended to use thread sealant or sealing tape. Related products include sealing tape for thread protection and sealing compounds for additional leak prevention. When ordering, ensure that the correct fittings and sealing materials are available for the specific pipe diameter and system requirements.

Technical background for designers

The SHARKS calibrator operates by expanding the inner diameter of the PEX-AL-PEX pipe to its nominal size after cutting. The tool is constructed from durable materials to withstand repeated use without deformation. PEX-AL-PEX pipes are composed of cross-linked polyethylene layers with an aluminium core, which provides structural rigidity and thermal stability. The calibrator must be designed to expand the inner diameter without damaging the aluminium layer, which could compromise the pipe's integrity. The effectiveness of the calibrator depends on the correct application and the condition of the cut end. Regular inspection of the tool for wear is recommended to maintain consistent performance.

Service and operation

Regular inspection of the calibrator for wear or deformation is recommended to ensure consistent performance. If the tool shows signs of damage or reduced effectiveness, it should be replaced to avoid inconsistent calibration results. No scheduled service intervals are specified for this tool. During operation, ensure that the calibrator is used according to the manufacturer's instructions to avoid over-expansion or damage to the pipe. After use, store the tool in a dry and clean environment to prevent rust or contamination.

Frequently asked questions

Can the SHARKS calibrator be used with other pipe materials?
No, the calibrator is specifically designed for PEX-AL-PEX pipes. Using it with other materials may cause damage to the pipe or the tool.

Is it necessary to calibrate both ends of the pipe?
Yes, both ends should be calibrated to ensure proper alignment and sealing when connecting fittings. Failure to do so may result in leaks or misalignment.

Can the calibrator be used on bent or curved pipes?
No, the calibrator is intended for straight pipes. Using it on curved sections may cause uneven expansion or damage to the pipe.

This can affect the overall efficiency of the installation.