Is pure water filter a special equipment

What kind of filter has an operating pressure of 1.6MPa? You've misplaced it

Only the membrane shell is 1.6MPa

Conventional pressure vessels are first designed and manufactured in accordance with the standards for pressure vessels,

Then the Special Inspection Institute in accordance with the capacity of the supervisory inspection, out of the pressure vessel data. This equipment is only qualified and allowed to use.

And operation must also be carried out in accordance with the regulations of the pressure vessel

But the filter in the water treatment, only 0.4 ~ 0.6MPa, so before it has been referring to the design and manufacture of the pressure vessel, but not supervise the inspection. Save the Special Inspection Institute that set of processes, the information needed is less.

Membrane shell does not belong to the pressure vessel, pressure vessel not only pressure requirements, volume, temperature and other requirements. Membrane shell volume less than, so does not belong to