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.
Actuator Warranty & Reliability
The actuator supplied with this valve is covered by a 5-year actuator warranty, or up to 1 million actuations, whichever comes first. Built with fully welded, sealed, maintenance-free construction, it eliminates internal servicing and reduces wear components to deliver long-term durability in demanding hygienic processing environments.
Key benefits include:
Maintenance-free operation with no internal servicing
Fewer spare parts and improved total cost of ownership
uptime and production continuity
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.
