Before to assemble the joint at the pipeline check inside the body to be completely clean, possible impurities have to be removed in order to ensure a right functioning. If compressed air is at your disposal, use it for a better cleaning. The counter-fl anges of the pipeline must be parallel and have aligned holes. Check the space between them, keeping into account the fl attering of the outside part of the joint, that serve as a gasket, after bolts closing. Fit the bolts in fl anges holes and tighten them maintaining a diametrically opposed sequence (for a better deformation of the outside part of the joint).
NOTE: in case of strong and continuous stresses it is advisable to employ stroke limiter for joints (item 307).