The difference between double and single fittings

double ferrule tube fittings and single tubing fittings are used on the card sleeve. Dual card sets using special alloy, large deformation, but also to ensure its rigor and sealing, its strength is better than other materials.
General tube connection can use double or single fittings, dual card ring card sets can be repeated several times and can guarantee tightness disassembly. Single card sets of pipe fittings and ordinary and tube connections, as a head no need thread connecting with ordinary tube, threaded to connect to the card casing. For large double ferrule can ensure the strength, the small card sets to meet deformation requirements of use. Fittings mainly by the joint body with 24 degrees conical hole with a sharp inner edge of the sleeve 2 and the pinch effect from the compression nut 3 III some components. 3:00 tighten the nut, sleeve 2 is pushed 24 degrees tapered bore and consequent deformation, so that the body of tapered ferrule and fittings constitute a spherical touch seal. Inner edge card sets embedded steel tube 4, the outer wall of the pressure out of a ring groove, then play a reliable sealing effect. Pipe stress relief annealing best selection of 20 # fine extubation, it is a good edge embedded in the outer appearance of pipe fittings, play reliable sealing effect.