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BARTON FIRTOP
ENGINEERING COMPANY LIMITED
P.E.D. Classification



Mesh Information | Pipe Schedules | Pipe Schedule Information | Material Information
P.E.D. Classification - The new law in brief.

To apply the Pressure Equipment Directive (P.E.D.) to specific filters and strainers, it is necessary to classify the equipment into one of five assessment categories (Items 1" and below do not apply):-

Category IV (the most stringent)
Category III
Category II
Category I
Sound Engineering Practice (S.E.P.) - No involvement by Notified Body.

the above categories are derived from charts which are indicated in the following table:-


 
Vessels
Steam
Generators
Piping
State of Contents
Gas
Liquid
 
Gas
Liquid
Fluid Group
1
2
1
2
1
2
1
2
Chart Number
1
2
3
4
5
6
7
8
9
Click on 'chart numbers' to view required chart.

Information required to classify the equipment:-

Type of Equipment

a) Vessels - defined as 'major increase in volume relative to pipeline' i.e. large Basket Strainer, Pressure Vessel, tank etc.

b) Piping - defined as 'minor or no increase in volume relative to pipeline' i.e. Y-Type Strainer, valves etc.

Service

a) Fluid or b) Gas

Fluid Group

a) Group 1 - classified as dangerous substances, i.e. explosive, extremely flammable, highly flammable, flammable, very toxic, toxic, oxidising.

b) Group 2 - comprising of all other fluids, including steam.

Once the relevant chart has been identified, the correct classification can then be identified by plotting the charts as follows: -

Vessels - Volume against Maximum Allowable Pressure.

Piping - Nominal size against Maximum Allowable Pressure.

The use of graphs on this site for classification purposes are at the users risk - if in doubt please ask our sales team to verify classification(s).


Email our Sales Department for further information by clicking here
or Click Here to send us an On-line Enquiry.

Telephone: +44 (0)1527 831644.