VPN Series - Check Valves

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Product Type(s): Check Valves

Prevent return flow of liquids.

DELTA VPN Check Valve Overview

Purpose and Operation

The DELTA VPN check valve prevents liquid reflux within processing pipelines. It opens automatically under liquid pressure acting on a spring-loaded valve disc and closes when the forward flow stops, triggered by the preloaded spring mechanism.

Design and Value

This compact valve design includes minimal components and serves as a cost-effective alternative to the DELTA RUF3 valve—ideal for hygienic and industrial flow control applications.

Housing, valve, disc, guide, cover are made of stainless steel grades 1.4571 / 1.4404 (DIN EN 100888). Available seal materials are EPDM and Viton. Nominal dimensions: DN 25 DN 100 and ISO 1 4.