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Pressure Equipment Manufacturer and Supplier Directory

PED Category Calculator


Select the appropriate calculator depending on the relevant fluid
Fluid Group 1
Fluid Group 2
Fluid Group 1
Fluid Group 2

PED Category Calculator for other pressure equipments:  
Pressure Vessel  and Fired Steam Boilers

PED Category Calculator

Pressure Equipment Directive (PED) 2014/68/EU

Table 9

Type of Pressure Equipment:
Fluid Group:
2 (None Hazardous Fluids)
Liquid: Liquids having a vapour pressure at the maximum allowable temperature of not more than 0,5 bar above normal atmospheric pressure (1 013 mbar);
Max. allowable Pressure
Nominal Size




The PED Category calculator for piping is a useful tool to calculate the category. Once the category is determined, the conformity assessment module can be selected.

PED -Table-9

Note 1: Piping means piping components intended for the transport of fluids, when connected together for integration into a pressure system; piping includes in particular a pipe or system of pipes, tubing, fittings, expansion joints, hoses, or other pressure-bearing components as appropriate;

Note 2: The heat exchangers consisting of pipes for the purpose of cooling or heating air shall be considered as piping;

Note 3: Half-pipe coil or a similar “jacket” construction that heat or cool a vessel are to be classified as vessels, therefore not a “piping”.

Note 4: Discharge piping from a pressure safety accessory, which will be exposed to a pressure PS above 0,5 bar, is in the scope of PED when exhausting to ambient atmosphere.

Note 5: Flare tip at the end of piping is in the scope of the PED. 

Note 6: Turbine piping defined as “connecting lines between different casings of the turbine train and connecting line between two positions at a single turbine casing and internal piping” is in the scope of PED, if the category is grater than I.

Note 7: Piping for super-heated water is covered at annex II table 7.

Note 8: Heat exchangers which consist of straight or bent pipes which may be connected by common circular header(s) made also from pipe are classified as piping if, and only if, the three following conditions are met: 1. air is the secondary fluid; 2. they are used in refrigeration systems, in air conditioning systems or in heat pumps; 3. the piping aspects are predominant.

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Manufacturers & Suppliers
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  • Company type
  • Location
  • Brief description of your company
  • Products limits dia., length & weight
  • Main used mat'l groups ISO/TR 15608
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Simple registration in 3 steps:

  1. Registration only with name, e-mail, company name,
  2. Approval and sending login data by PED directory team
  3. The vendor sends the prepared form with the details for the vendor directory listing