The push-in fitting represents the best connecting element, it is fast and practical and can be used thousands of times without compromising its pneumatic seal.
Maximum working pressure 18 bar.
The quick fitting has a perfect seal even on plastic tubes which have some imperfections of diameter. Pressure max 18 bar.
The brass bodied nipple with ferrule, used on low pressure metal tubes, has no problems for max working temperature.
Pressure max 60 bar.