Ferrule connections, it's connecting and sealing principle is that, when the nut is screwed, the card sets under pressure, so that the blade bite into the tube outer wall, card sets and outside the cone in the inner conical surface of the pressure and the joint density. Therefore, it can reliably prevent leakage.
The advantage of this form of connection is:
1. Small size, light weight, simple structure, easy assembly and disassembly;
2. Connect the power, the use of a wide range of under high pressure (1000 kg / cm2), high temperature (650 DEG C) and impact vibration
3. Can choose a variety of materials, suitable for anti-corrosion;
4. Processing accuracy is not high; easy to install high altitude.
Card sleeve connection form, has been used in some small caliber valve products in china.
