Installation of fittings

1 , for pipe fittings can not be used when installing gas welding and cutting knife, and pipe cutter cutting, in order to avoid being squeezed nozzle , diameter smaller impact on quality of the installation , resulting in leakage.
2 , check carefully before installing the pipe diameter and card rings, radial clearance is 0.3MM. 100MM at the nozzle to the presence or absence of vertical scratches , 50MM must be left above the elbow straight section , and check the elbow when bending mold, fixture Hydraulic adapters   ( installed card ferrule at ) injury, install only after confirmation .3, the installation is recognized when the tube into the pipe fittings at the bottom to ensure fittings, tube straight tube portion and the other vertical .4, the installation inlet tube , and imported fittings, when conditions best " pretensioners " for preload , improve the reliability of its installation . First, the " pre-tensioners " occupies a position with ferrule smear butter or Vaseline ( a lubricant to facilitate the smooth tube removed after preload ) , will cut a good pipe inspection , no damage, remove burrs with a file nozzle , put the card into the sleeve nut and ferrule pre-tensioners , tube top to the " pre-tensioners " , having a good " pre-tensioners " card board . Shake hydraulic pump pressure gauge to the desired look kilograms .