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  1. Service
  2. BRL K17401 District heating: flexible piping systems for transport of warm drinking water

BRL K17401 District heating: flexible piping systems for transport of warm drinking water

District heating: flexible piping systems with plastic medium pipe for transport of warm drinking water

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The products are intended to be used in connections between the district heating distribution system and the separate house (blocks) for the supply of warm drinking water, at a design pressure (= maximum working pressure) of 1,1 MPa (11 bar absolute or 10 bar overpressure) or 0,9 MPa (9 bar absolute or 8 bar overpressure) under the conditions mentioned in table 1. 


Remark:

Each pressure mentioned in this BRL is defined as overpressure.

(So, with "10 bar" a "10 bar overpressure" is meant).

ClassMaterial medium-pipe:
plastics
Temperature/time
profile
2X49 years 70 C (TD) + 1 year 80 C (Tmax) + 100 h 95 C (Tmal)
DH1*)X29 years 80 C (TD) + 1 year 90 C (Tmax) + 100 h 95 C (Tmal)
Remark:
Class 2 is according the temperature profile of ISO 10508 Class 2
Class DH1 is according the temperature profile of EN 253 (not according to a temperature profile of ISO 10508)


*) DH = district heating


Procedure for obtaining the quality declaration 

Pre-certification evaluation

The pre-certification evaluation to be performed is based on the (product) requirements as described in this evaluation guideline, including the test methods and contain, depending on the nature of the product to be certified:

• type testing to determine whether the products comply with the product and/or functional requirements;

• Production process assessment;

• Assessment of the quality system and the IQC-scheme;

• Assessment of the presence and functioning of other required procedures.

Granting the quality declaration

After finishing the pre-certification evaluation, the results are presented to the person deciding on granting of the certificate. This person evaluates the results and decides whether the certificate can be granted or additional data and/or tests are necessary.


Additional information

  • BRL-K17401.ENG final.pdf
    PDF 986 KiB
  • Procedure private labels
    PDF 93 KiB
  • Application form DKW7_ District heating UK v010518.docx
    DOCX 64 KiB
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