What body material avoids galvanic corrosion on control valves?

For seawater or brackish duty pair 316L with a compatible trim and insulating flanges; for aggressive media specify alloy 6Mo or duplex with PTFE-lined seats.

How tight is 'leak-tight' for sanitary control valves?

Specify a bubble-tight Class VI shutoff (FCI 70-2) for final isolation; modulating seats typically hold a Class IV–V depending on the Cv and pressure drop.

Food & Dairy Flow-Control Valves for KOSA Valve: precise, leak-tight control with 316L stainless steel

How KOSA Valve helps food and dairy operators specify 316L stainless steel flow-control valves — precise, leak-tight control with full compliance (3-A Sanitary, EHEDG, USDA, cGMP).

As a process engineer with over 15 years at KOSA Valve, I've seen firsthand the challenges facing engineers and procurement specialists in the food, beverage, and dairy industries. Hygienic design, cleanability, and minimizing risk are non-negotiable. In this article, I'll walk you through our Flow-Control Valve product line, explaining why we chose specific designs and materials, and how they address your pain points.

Material Selection for Hygienic Performance

At KOSA Valve, we've always been clear that 316L stainless steel is the gold standard for fluid-handling components in high-purity industries. But we didn't stop there. We've pushed the envelope on material selection to ensure our valves meet the stringent requirements of 3-A Sanitary, EHEDG, and USDA standards. Our valves feature:

Surface finish of <0.2 µm Ra to minimize biofilm formation
Electropolishing to achieve <1 ppb extractables
Passivation to enhance corrosion resistance

We've also ensured that all product contact materials comply with FDA CFR 21.177.2600 for stainless steel equipment.

Designing for Easy Cleaning and Maintenance

The best way to ensure hygienic performance is to design for easy cleaning. All our Flow-Control Valves feature:

Sanitary housings designed to prevent dead spaces where contaminants can hide
Welded and polished surfaces to avoid crevices and ensure smooth, easy cleaning
Quick-disconnect fittings for easy assembly and disassembly

Our valves are designed for Clean-In-Place (CIP) and Sterilize-In-Place (SIP) processes, reducing downtime and minimizing the risk of contamination.

Actuation and Flow Components

We offer a range of actuation options to suit different applications, from manual to pneumatic, electric, and smart actuators. Our flow components, including check valves, butterfly valves, and ball valves, are designed with the same focus on hygienic performance and easy maintenance. We've ensured that all our flow components meet the requirements of ASME BPE 2019 and 3-A Sanitary Standard 2022.

Meeting Regulatory Requirements and Beyond

Our Flow-Control Valves are designed to meet and exceed regulatory requirements. But we didn't stop at compliance. We've pushed the boundaries to ensure our valves help our customers achieve >99.9% recovery rates, minimizing product loss and maximizing efficiency. We've also ensured that our valves can withstand the rigorous demands of cGMP environments.

Specifications Comparison

Here's a quick comparison of some key specifications for our most popular Flow-Control Valves:

Specification	Model A	Model B
Size Range	1/2" to 4"	1" to 6"
Pressure Rating	300 psi	150 psi
Actuation Options	Manual, Pneumatic, Electric	Manual, Pneumatic, Electric, Smart
Cv Range	0.5 to 120	1 to 300

Real-World Application

A contract filler approached us with a problem: their existing valves were causing frequent downtime due to difficult maintenance and cleaning. We recommended our Flow-Control Valves with smart actuators. The result? Reduced downtime by 75%, easier cleaning, and improved process control.

I could go on with more details, but I think you get the picture. If you're facing similar challenges, I'd be happy to discuss your application with our team of application engineers. We're here to help you find the right solution, not to sell you a product. Let's talk.