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Valsir S.p.a
Waste and water
supply systems, underfloor heating system
and flush cisterns


Brass compression fittings.

Pexal Twist

Pexal® Twist is the classical compression system made of brass that can be used with Pexal® and Mixal® multilayer pipes.

Pexal® Twist provides reliability and an extremely simple installation

Pexal® twist, the advantage of a traditional system


Ease of installation

Extreme ease of installation without the need for special tools.

Removable fitting

Wide range

Range of diameters from 14 to 32 mm.

Ideal for transportation of drinking water

Certificate for transportation of drinking water.

Anti-loosening profile

Anti-loosening profile and double ring seal.


The permanent connection of the pipe is created by compression by tightening the nut over the slotted olive.

The internal profiles allow tightening of the olive and the distribution of the compression force over the entire surface of the multilayer pipe.


Quality system

Valsir, in order to verify and guarantee the quality of the connections between the multilayer pipe and fitting, performs numerous types of tests, and not just those imposed by the International quality standards.

High temperature pressure tests, oven tests, bursting tests, tensile tests, water hammer tests and vibration tests on the joint are just some of the tests performed in our laboratories to guarantee the quality and reliability of our multilayer system. The tests are carried out on all fitting types, Pexal® Brass, Bravopress®, Pexal Easy® and Pexal® Twist.

Simple and reliable principle

By tightening the nut the pre-cut olive is also progressively tightened and, thanks to the distribution of the compression over the entire surface of the pipe in contact with the fitting a long-lasting mechanical coupling is guaranteed

The two o-rings on the insert guarantee a water tight connection when the system is under pressure.

Pexal Pipes

Pexal® is composed of multilayer pipes and different types of fittings that are chosen according to the installation technique adopted. There are various applications: from the distribution of hot and cold drinking water to centralised water supply

systems, from radiator and fan heating systems to radiant floor, wall and ceiling heating and cooling systems, from compressed air systems to industrial plants.

Certified quality

The range has been certified by the strictest certification bodes.



Valsir provides complete support both during the planning phase and on site, thanks to a first-class technical office made up of a team of highly experienced engineers, capable of dealing with the most complex system requirements.

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Silvestro Software

Silvestro is a software program created by Valsir to help planners in the creation of water supply and waste systems. Thanks to its ease of use it allows the Valsir products to be easily adopted in any project.

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