Pipeline ancillaries Disc, split disc and wafer check valves
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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2004
AI-P134-33 ST Issue 2
DCV Wafer Check Valve Applications Sheet 3
Boiler feedline
A DCV wafer check valve, fitted with an EPDM soft seat and a heavy duty spring, is installed after the boiler feedpump. This ensures that reverse flow back through the pump will not happen when the pump shuts down. The heavy duty spring ensures that gravity flow into the boiler does not occur when both the pump and the boiler are shutdown, therefore protecting the boiler against flooding.
Multiple pump installations
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A DCV wafer check valve fitted with a suitable soft seat is installed after each pump. This will ensure that reverse flow does not occur back through the pumps that have stopped running.
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AI-P134-33 ST Issue 2
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DCV Wafer Check Valve Applications Sheet 3
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