4" Sanitary 316L Stainless Steel One Way Check Valve

Sanitary check valve

Designed for larger-scale home projects and light commercial use, this valve ensures liquids flow only forward—no back-splashing, no residue traps, and no compromise on hygiene. Perfect for 10-gallon+ brew setups, small-batch sauce lines, or lab-grade fluid systems, it’s the heavy-duty check valve you’ve been waiting for.

4" Size – Handles Big Flow, No Compromises

Most check valves max out at 3", but Eagle’s 4" design handles up to 75 GPM (gallons per minute). Whether you’re transferring 25 gallons of beer, dispensing 10-gallon batches of sauce, or running steam through a large distiller, this valve keeps flow steady and backflow nonexistent. No more bottlenecks—just smooth, reliable movement.

316L Stainless Steel – Rustproof, Even in Harsh Food/Lab Environments

Crafted from 316L stainless steel (the “industrial gold” of food-grade metals), this valve resists corrosion from acidic ingredients (like citrus in jams or hops in beer), harsh sanitizers, and even saltwater. Unlike cheaper 304 steel or plastic, it won’t rust, warp, or leach chemicals—keeping your products pure and your process safe.

3-A Certified – Trusted by Pros, Built for You

This valve meets 3-A Sanitary Standards—the same certifications used in commercial dairies and breweries. Whether you’re selling beer at farmers’ markets or making artisanal cheese, Eagle’s valve ensures your process is as clean as the pros’—and your customers notice.

Where 4" Sanitary Check Valves Shine (Real-Life Uses)

🍻 Big-Batch Homebrew: Transfer 25 gallons of beer from fermenter to keg without siphoning—keeps carbonation perfect, batches clean.

🥫 Small-Scale Food Production: Dispense 10-gallon batches of salsa, ketchup, or yogurt without cross-contamination between flavors.

🧪 DIY Lab Distillers: Run steam through a 4" copper still—valve ensures it flows one way, no back-pressure ruining your essential oil extraction.

🥛 Homemade Dairy: Separate 20+ gallons of whey from curds in cheese-making—no re-mixing, no wasted product.

Dimension