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.

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

How KOSA Valve helps pharmaceutical operators specify 316L stainless steel flow-control valves — precise, leak-tight control with full compliance (ASME BPE, 3-A, FDA 21 CFR, cGMP).

In pharmaceutical and biopharmaceutical manufacturing, maintaining sterility, ensuring cleanability, and validating processes are non-negotiable. These critical aspects directly influence product quality and patient safety. At KOSA Valve, our Flow-Control Valves product line addresses these challenges head-on, offering sanitary and industrial control valves, actuation, and flow components designed to meet the stringent requirements of high-purity industries. Let's explore how our valves contribute to sterility assurance, cleanability, and validation.

Meeting Sterility Requirements

Sterility is paramount in pharmaceutical and biopharmaceutical manufacturing. Our Flow-Control Valves are engineered to prevent microbial contamination and ensure product integrity. We offer sterilizing-grade filtration options, with 0.2 µm absolute-rated filters integrated into our valve designs. This ensures that any potential contaminants are effectively removed, maintaining a sterile environment. Additionally, our valves are designed for clean-in-place (CIP) and steam-in-place (SIP) procedures, allowing for efficient and effective sterilization without disassembly.

Design for Cleanability

Cleanability is crucial for preventing cross-contamination and ensuring product purity. Our valves feature polished surfaces with a 32Ra or better finish, minimizing areas where contaminants can hide. The use of 316L stainless steel ensures resistance to corrosion and chemical attack, further enhancing cleanability. All our valves comply with ASME BPE 2019 and 3-A Sanitary Standards 2022, guaranteeing that they meet the highest standards for sanitary design.

Our valves also feature self-draining designs to prevent the accumulation of fluids, which can harbor bacteria. Additionally, we offer various end connections, including tri-clamp, ferrule, and butt-weld, to accommodate different process requirements and enhance cleanability.

Consider a contract development and manufacturing organization (CDMO) that faced recurring contamination issues due to improper valve design. Switching to our Flow-Control Valves with integrated sterilizing-grade filters and self-draining designs resolved their contamination problems, resulting in >99.9% recovery rates and consistent batch quality.

Validation and Compliance

Validation is a critical aspect of pharmaceutical manufacturing, ensuring that processes consistently produce the expected results. Our valves are designed with validation in mind, featuring extractables and leachables testing to <1 ppb, ensuring that they do not introduce contaminants into the process. We provide comprehensive documentation to support validation efforts, including material certificates, dimensional drawings, and performance data.

Materials of Construction

Material selection is crucial for ensuring the longevity and performance of valves in high-purity environments. Our Flow-Control Valves are constructed from 316L stainless steel, known for its excellent corrosion resistance and durability. We also offer various elastomer options, including EPDM, FKM, and PTFE, to meet specific process requirements. The following table compares the key properties of these elastomers:

Elastomer	Temperature Range (°C)	Chemical Resistance
EPDM	-40 to 150	Excellent resistance to steam, hot water, and many chemicals
FKM	-20 to 250	Excellent resistance to a wide range of chemicals, including strong acids and bases
PTFE	-184 to 260	Excellent resistance to virtually all chemicals

Each elastomer has its unique advantages, and the choice depends on the specific process requirements. Our application engineers can help you select the most suitable material for your application.

Customization and Flexibility

We understand that every process is unique, and a one-size-fits-all approach does not work in high-purity industries. That's why we offer a high degree of customization for our Flow-Control Valves. Whether you need specific actuation options, unique end connections, or special materials, we can accommodate your requirements. Our flexible design approach ensures that you get a valve that meets your precise needs.

For example, a biopharmaceutical manufacturer needed a valve with a specific actuation type for their automated filling line. We worked closely with them to develop a custom valve that met their exact specifications, ensuring smooth operation and minimal downtime.

Our technical team is always available to discuss your application and provide tailored solutions. We invite you to reach out to our application engineers to explore how our Flow-Control Valves can meet your specific needs and challenges.