KHIA header Know-How in Action

VOL XX, NO 25

Belzona® Protects Rubber Pipes At Wwtp From Uv Attack

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Wastewater Treatment Plant, BC, Canada

 
 

Application Date:

August 2004

 
 

Application Situation:

Flexible rubber transfer pipes on digester

 
 

Problem:

UV attacks the rubber over a period of time causing it to degrade and eventually become brittle.

 
 

Products:

Belzona® 3211 (Lagseal)

Belzona® 3921 (GSC Conditioner)

 

Substrate:

Rubber pipe with stainless steel flanges

 
 

Application Method:

Application carried out in accordance with a modified version of Belzona System Leaflet VPF-12.

 
 

Belzona Facts:

This application has provided protection on similar pipes for more than 10 years. The life of unprotected pipes was 3-5 years.

 
 

Photographs Description

  1. Preparation of flexible hoses in progress. All pipes are tightly wrapped with a polythene film to prevent bleed through of the pitch from the rubber component.
  2. The flanges are ground and coated with Belzona® 3921 GSC Conditioner.
  3. Application of Belzona® 3211 in progress. Belzona® 9311 Reinforcement cloth is incorporated into the 1st coat.
  4. Completed application.
 
Case study pic one

 

 
  Case study pic two

 

 
  Case study pic three

 

 
  Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com