A mix proof valve allows two different fluids—such as product and CIP solution—to flow through the same valve cluster at the same time without risk of cross-contamination. It uses an internal double-seat design and a leak detection chamber to ensure complete product separation and hygienic operation.
Reliable Product Separation Technology
SPX Flow mix proof valves provide safe, sanitary product separation for processing facilities that require simultaneous flow paths without risk of cross-contamination. Engineered for CIP (Clean-in-Place) efficiency, these valves use double-seat technology with a leakage chamber to ensure complete isolation between product and cleaning solutions.
With durable construction, flexible configurations, and exceptional cleanability, SPX mix proof valves support efficient automation and high levels of process uptime across food, beverage, dairy, and other hygienic applications.
Browse Mix Proof Valve Options
W71 Series: Double Seat Shut-Off Valves
Mix Proof valves provide safe separation of dissimilar products within the same valve body. For general purpose Mix Proof applications, WCB offers two basic valve types: The W71 Series for shutoff service, and the W73 Series for divert applications.
W72RS Series: Double Seat Mixproof Minimal Spill Valves
Mix Proof valves provide safe separation of dissimilar products within the same valve body. The W72RS Series features a radial seal seat design for minimal spillage of products when opening and closing.
D4 Series: Double Seat Mixproof Valves
The D4 Series Mix Proof valve offers reliable separation of fluids and an ultra-hygienic option for enhanced cleanability. This next generation of mixproof valve technology is the result of continued development from both APV and Waukesha Cherry-Burrell process technologies. Used for the reliable separation of dissimilar fluids, the D4 Series helps fulfill today’s customer demands for production flexibility, increased productivity, rapid return on investment (ROI), and improved product quality across the Food & Beverage, Dairy, Personal Care and Brewing process industries.
D4PMO Series: Double Seat Mixproof Valves
The SPX Flow D4PMO mix proof valve provides reliable separation of dissimilar fluids in Grade A dairy applications. Designed using APV and Waukesha Cherry-Burrell technology, it delivers high productivity, flexible processing, and exceptional product protection across fluid milk, cheese, cream, whey, and yogurt systems.
DT4 Series: Tank Outlet Double Seat Mixproof Valves
The DT4 tank outlet mix proof valve is used for the reliable separation between the tank and servicing pipeline. The DT4 tank outlet is an extension to the D4 Series mix proof family which helps fulfil today’s customer demands for production flexibility, increased productivity, rapid return on investment (ROI) and improved product quality in the food and drink, dairy, personal care and brewing process industries.
Frequently Asked Questions
Mix proof valves are ideal for sanitary facilities that need simultaneous processing and cleaning, streamlined automation, and reduced downtime. They are commonly used in dairy, food, beverage, and other hygienic applications where product integrity and efficient CIP cycles are essential.
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