quick opening closure for pig launcher

•  When welding the blind flange and the cylinder body, the current is not too much, if you overheat the

         blind plate, it will out of shape.

•  The  person who  using  the blind flange, must know the structure and the operation procedures

         of blind plate.

•  Before  open  the blind  flange cover, you must first open the air valve to make sure the pressure in

         the pressure vessel drop to zero, then open the blind flange.

•  When  pressurized to the pressure  vessel, you must first installed the releasing plate, then  press-

         urized and put into use.

•  After the  pressure vessels  are  put into use, knock  the main pressure components  and collision is 

         forbidden. 

• The transmission system of the blind plate and screw locking  device must  always apply oil to prevent

        rust. Appearance must be intact and clean.

• On a regular basis to check the blind flange of main pressure parts (such as blind plate,tube surface)

        if found it heavy corrosion or crack, must find out the reason in time,and handle the question  properly.

• After use, to inspection and clean the gasket and the seal groove, and paint yellow glycerin, in order

        to prevent bad sealing.