Plant high temperature and high pressure by the pneumatic brake valve pneumatic valve derusting, paint requirements

, derusting, paint should be performed after the hydrostatic test qualified, and clear out the cavity in the body of water damage.
appearance, pneumatic valve processing surface coating anticorrosive grease, not the surface paint processing.
and painted before the processing surface must be clean, apply a layer of red lead after primer, then a layer of paint.