Mixproof Valve (Double Seat Valve) – Complete Guide for Bangladesh

Introduction

In modern food, beverage, dairy, brewery, and pharmaceutical industries, hygienic processing is essential. Companies in Bangladesh are increasingly adopting mixproof valves (also known as double seat valves or double block and bleed valves) to ensure maximum safety, efficiency, and product quality.

A mixproof valve is a sanitary valve designed to allow two different fluids—such as product and CIP (Cleaning-in-Place) solution—to flow through the same valve body without risk of contamination. This makes them the ideal solution for industries where hygiene and efficiency are top priorities.

If you are searching for “Mixproof ভালভ বাংলাদেশ”, “Double Seat Valve ঢাকায়”, or “CIP Valve স্যানিটারি ভালভ”, this guide will give you everything you need to know about mixproof valves, their benefits, applications, and available options in Bangladesh.

What is a Mixproof Valve?

A mixproof valve is a pneumatically actuated hygienic valve with two independent seats that isolate different liquids. Between the two seats lies a leak detection chamber, which ensures that if one seal fails, the fluids are drained safely without mixing.

This design provides a unique advantage: while one product line is being cleaned with CIP, the other line can continue transporting the product, saving time and increasing efficiency.

Bangla keywords:

• Mixproof ভালভ বাংলাদেশ

• Double seat valve CIP স্যানিটারি ভালভ

• ডেইরি mixproof ভালভ

• ফার্মাসিউটিক্যাল ভালভ বাংলাদেশ

Working Principle of Mixproof Valves

The operation of a double seat mixproof valve is based on:

1. Dual sealing plugs – Two independent valve seats separate different liquids.

2. Leakage chamber – Positioned between the seats and open to atmosphere or drain, ensuring any leakage is discharged.

3. CIP seat lifting – Seats can be lifted individually during cleaning, guaranteeing that all contact surfaces are sanitized.

4. Pneumatic actuation – Air pressure opens and closes the valve smoothly for automated process control.

This unique design is why industries trust double block and bleed valves for critical hygienic applications.

Key Features and Benefits

• ✅ Hygienic Design – Constructed in AISI 316L stainless steel, resistant to corrosion and suitable for sanitary applications.

• ✅ Leak Detection Chamber – Prevents cross-contamination between product and CIP solution.

• ✅ CIP Seat Lift Cleaning – Ensures reliable cleaning without dismantling.

• ✅ Automation Ready – Fully compatible with modern PLC systems.

• ✅ Durable Seals – Equipped with EPDM or FKM seals for long service life.

• ✅ Cost Saving – Allows simultaneous product transfer and line cleaning, reducing downtime.

• ✅ Safety and Reliability – Proven design for dairy, food, beverage, and pharma industries.

Bangla keyword integration:

• “Mixproof ভালভ CIP ক্লিনিং সিস্টেম”

• “ডাবল সিট ভালভ খাদ্য শিল্পে”

• “পানীয় শিল্পে স্যানিটারি ভালভ”

Applications of Mixproof Valves in Bangladesh

1. Dairy Industry

Bangladesh has a growing dairy sector, and hygienic valves are vital for milk processing, pasteurization, and packaging. Mixproof valves prevent milk and CIP solution from mixing, ensuring product safety.

2. Beverage Industry

Soft drink, juice, bottled water, and carbonated drink manufacturers require high-efficiency CIP valves to avoid downtime. Mixproof valves enable simultaneous production and cleaning.

3. Brewery Industry

Breweries in Dhaka, Chattogram, and Sylhet benefit from mixproof valves to keep beer and cleaning agents strictly separated during fermentation and transfer.

4. Pharmaceutical Industry

Pharmaceutical plants require aseptic mixproof valves to maintain sterility while reducing cleaning time. The valves comply with FDA and GMP standards.

5. Food Processing

From edible oil to sauces and packaged foods, mixproof valves provide hygienic separation and automation, making them ideal for Bangladesh’s fast-growing food industry.

Technical Specifications

• Material: AISI 316L Stainless Steel (contact parts), AISI 304 (external)

• Seals: EPDM, FKM, or PTFE available

• Operation: Pneumatic with optional electronic control tops

• Temperature Range: -10°C to 140°C (depending on seals)

• Pressure: Up to 10 bar operating pressure

• Connections: DIN, SMS, Tri-Clamp, or Weld

• Cleaning: Full CIP compatibility with seat lift function

Bangla keywords:

• স্টেইনলেস স্টিল মিক্সপ্রুফ ভালভ

• CIP পরিষ্কার করার ভালভ

• Pneumatic double seat valve বাংলাদেশ

Leading Brands and Models

Bangladesh industries commonly import from internationally recognized brands:

• Alfa Laval Unique Mixproof Valve – Highly reliable, widely used in dairy and pharma.

• GEA Flowvent / Varivent Mixproof Valve – Modular design, perfect for beverage plants.

• INOXPA INNOVA Mixproof Valve – Compact and cost-effective for dairy and food.

• Bardiani B925 Double Seat Valve – Strong reputation in beverage and brewery sectors.

• APV D4 / DA4 Series – Advanced control options and excellent hygiene standards.

Local suppliers in Dhaka, Narayanganj, and Chattogram often carry these models or can import them on request.

Advantages for Bangladeshi Industries

• Reduced Downtime – Clean one line while the other is in operation.

• Lower Water & Chemical Use – Efficient CIP saves resources.

• Improved Hygiene – Essential for dairy and pharma compliance.

• Automation Integration – Compatible with PLC and SCADA systems.

• Long Life Cycle – Stainless steel construction ensures durability.

• Local Support – Many suppliers in Bangladesh provide spares and service.

FAQs

Q1: Why choose a Mixproof Valve over a Single Seat Valve?
➡ Mixproof valves allow simultaneous production and cleaning, while single seat valves require line shutdown.

Q2: Are Mixproof Valves suitable for Bangladeshi dairy plants?
➡ Yes, they are ideal for milk, yogurt, and ghee production, preventing contamination.

Q3: Can they be used in breweries?
➡ Absolutely. Breweries benefit from double seat valves to separate beer and cleaning chemicals.

Q4: What sizes are available?
➡ Common sizes: DN25 to DN150 or 1″ to 6″.

Q5: Where to buy in Bangladesh?
➡ Local suppliers in Dhaka, Narayanganj, Gazipur, and Chattogram supply Mixproof ভালভ বাংলাদেশ for dairy, beverage, and pharma.

Conclusion

The Mixproof Valve (Double Seat Valve / Double Block and Bleed Valve) is the perfect solution for Bangladesh’s growing dairy, beverage, brewery, pharmaceutical, and food industries. With its hygienic design, leakage chamber, and CIP compatibility, it ensures safe separation of fluids while improving efficiency.

If you are looking for “Mixproof ভালভ বাংলাদেশ”, “Double Seat Valve ঢাকায়”, or “CIP Valve স্যানিটারি ভালভ”, our range of international models (Alfa Laval, GEA, INOXPA, Bardiani, APV) combined with local support offers the best solution for your business.

Choose a pneumatic hygienic mixproof valve today to improve product safety, increase uptime, and reduce costs in your plant