WRAS Approval and Water Fittings Regulations - Drinking Water ...
WRAS Approval and Water Fittings Regulations - Drinking Water ...
WRAS Approval and Water Fittings Regulations - Drinking Water ...
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<strong>WRAS</strong> MATERIALS APPROVAL<br />
Initial testing of raw material gets ‘Material only’ <strong>Approval</strong><br />
Forming components – further testing needed?<br />
*<br />
- composition unaltered by<br />
heat & pressure used to<br />
form components<br />
‘Material only’<br />
approval adequate for<br />
components<br />
2 main<br />
types of<br />
materials<br />
‘Component<br />
Material <strong>Approval</strong> ’<br />
after extra tests<br />
*<br />
- processing of<br />
components alters<br />
composition so testing<br />
needed<br />
NB: Only assesses effects on <strong>Water</strong> Quality, not mechanical performance<br />
*See materials listing in App. A <strong>WRAS</strong> Guidance for Mechanical <strong>Approval</strong>
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