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Introduction to pressurized buffer tanks
P.E.D. tested autoclaves - AC Series
P.E.D. tested pressurized air tanks
P.E.D. tested high pressure tanks - 16 bar / 18 bar / 20 bar / 25 bar / 30 bar / 35 bar / 64 bar
P.E.D. tested expansion vessels
P.E.D. tested steam accumulator tanks
P.E.D. tested heat-transmitting oil expansion vessels

Guide to P.E.D.


The Pressure Equipment Directive 97/23/EC (PED) of the EU sets out the standards for the design and fabrication of pressure equipment having a maximum pressure more than 0.5 bar gauge. It has been mandatory throughout the EU since 30 May 2002.
According to the PED, fluids are divided in 2 categories:
GROUP 1: includes dangerous fluids
- Explosives
- Extremely flammable
- Easily flammable
- Flammable (where the maximum allowable temperature is above flashpoint)
- Highly toxic
- Toxic
- Reactive
GROUP 2: includes all fluids not listed in group1 and therefore not dangerous.
Depending on the group and the maximum allowable temperature of the fluid , the pressure equipments are classified into tables. Tables 1,2,3,4, relate to the pressure vessels. Table 5 relates to the pressure equipments for generation of steam or superheated water at temperatures above 110°C.
After choosing the right table, depending on the value of the data (PS and V for pressure vessels) or the value of their product, determine the category (Article 3-paragraph 3, I, II , III, IV) of the equipment. The five tables must be consulted in line.
The pressure equipment not subject to Article 3 -paragraph 3, and belonging to category ≥ I must get the CE mark according to PED.

NOTE 1: WATER, ETHYLENE GLYCOL AND PROPYLENE GLYCOL BELONG TO GROUP 2.
Technical Data


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