1. Brass compression fittings is made of one brass body, one brass o-ring and one brass nut. 
2. One side can connect pipes and the another side can connect other fittings or pipes with male/female thread.
3. The process of production is forging, shot blasting, fine finishing, assemblying, testing and packing.
4. They are used to connecting for both pex-al-pex pipe and pex pipe, from size ***6 to ***0. The male tread size is from 1/2 inch to 2 inch. 
5. They can be used for hot and cool water-supply system and civil heating system.
6. The compression fittings are easy to install,just tighting the nut to the body, without any special tools,so which makes them also easy to be replaced.