Case Study

Internal Lining for Inlet Flow Control Valve

36” Inlet Flow Control Valve Subject to Water Flow Erosion.

  Client Reservoir, UK.   Scope of Work  A 36” inlet flow control valve had been in service for 60 years at Ladybower reservoir, one of three reservoirs in the Upper Derwent Valley in Derbyshire, England.   Products  Polyglass VEF: An excellent in immersed environments and is resistant to chemicals across the pH range. WRAS approved VEF is suitable for town water and potable water service.   Coating System The valve parts, 5 in all, were delivered to our Leeds workshop where they were abrasive blasted to achieve the required cleanliness standard, before being thoroughly cleaned down and vacuumed. Multiple coats of WRAS approved Polyglass VEF were then applied to reach the client’s specified DFT of 1000µm. After suitable curing, thickness and spark testing was carried out and final visual inspection made to ensure the quality of the coating work completed. The vessel was then prepared for dispatch to the customer and subsequent recommissioning.   Coating Credentials  The protective coating will enable a significantly extended service period for the valve. The customer can also expect a fast return on investment due to reduced maintenance intervals, that take the valve out of service, being required. Good for another 60 years.

Internals after blasting showing erosion corrosion - Internal lining.

Valve body completed - completed parts.

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