Compression or Screw Fittings Compression Fittings combine the positive feature of high reliability with a simple installation technique. The fittings do not require any special tools. The permanent pipe joint is achieved by compression i.e. by tightening the nut against the coned-shaped olive. The profiles of the two pieces are designed to cause a progressive shrinkage of the coned-shaped olive and to distribute the compression forces across the contact surface. A seal housing has been designed with a special slip-proof profile called O-rings that come into direct contact with the pipe. The simplicity and economic aspect of this system is based on the use of spanners, standardized threads (GAS ISO), which make it possible to connect with any system.
Crimp or Press Fittings Crimp Fittings have been designed to further simplify the installation operations by significantly reducing the time required for assembly. This technique also causes the pipe to deform permanently by compression, which is achieved by the action of a pressing machine fitted with suitable jaws. The machine operates by permanently deforming a ferrule, suitably sized to ensure that the pressure is exerted even when the temperature changes occur, and a permanent leak-proof seal is achieved by the special slip proof profile of the tail and two O-rings that are in direct contact with the pipe.