Mixproof valve FHF- ISC

Donjoy factory building in 1993 year,located in Wenzhou,China

Dairy milk wine process food grade sanitary double seat mixproof valves manifolds

The double seat mixproof valve is a valve with technical characteristics such as online in-situ CIP cleaning, SIP sterilization, leakage detection, double-layer sealing protection, and prevention of the risk of medium contamination. It also has a very flexible valve body combination and Functional configuration such as valve control unit, feedback device, position sensor, etc. The design of the valve is completely based on the high cleanliness requirements of the United States 3-A-85-03 design.

What is mixproof valve?

Mixproof valve is a type of valve used in process industries to prevent the mixing of two different fluids or products. It consists of two valve seats, one on each side of the valve body, which are separated by a diaphragm or piston. This design allows for the simultaneous flow of two different fluids or products in opposite directions, without mixing, while also ensuring that there is no leakage between the two flow paths. Mixproof valves are commonly used in industries such as dairy, food and beverage, pharmaceuticals, and chemical processing. All in all\,this design helps to prevent contamination and maintain product quality and safety during processing.

How do mixproof valves work?

Mixproof valves work by using a double-seat design to isolate two different fluids or products passing through the valve. The two seats or valve plugs are separated by a flexible diaphragm or piston, which can move up and down to open or close each seat. This allows the valve to have two separate flow paths, one for each fluid, which are isolated from each other. When the valve is closed, the diaphragm creates a seal between the two flow paths, preventing any mixing or cross-contamination between the two fluids.

During operation, the valve position is controlled by an actuator with compressed air, which moves the diaphragm up and down to open or close each seat. When one seat is open, the other is closed, ensuring that the two products don't mix. Mixproof valves are designed to be CIP (clean in place) and SIP compatible, which makes it easier to clean and sanitize the valve between batches or product changeovers without disassembling it, reducing downtime during production.

How to choose mixproof valves for dairy industry？

In the modern industrial field, fluid control is a vital task. However, the problem of mixing between different fluids has been plaguing many companies. In order to solve this problem, the mixproof valve will become a powerful assistant for industrial safety and production efficiency.

The main advantage of the mixproof valve is that it can be cleaned and sterilized online in situ CIP. This technical feature allows the valve to be thoroughly cleaned and disinfected without disassembly. This not only greatly reduces maintenance costs and the risk of production interruption, but also ensures the sanitation and safety of the production environment, effectively preventing bacterial growth and cross-contamination.

The mixproof valve also has the technical characteristics of self-draining, no dead angle inside and no retention. When the valve is closed, it can automatically empty the residual fluid inside to avoid dead angle and retention. This not only effectively prevents fluid mixing, but also ensures the cleanliness and smoothness of the pipeline system, further improving production efficiency and product quality.

The mixproof valve also has very flexible configuration options. It can be combined with automatic control systems such as position feedback, valve control unit C-TOP, position sensor, etc. to achieve precise valve control and monitoring. This flexible configuration enables the mixproof valve to be customized according to different production needs and scenarios to better meet the actual needs of enterprises.

In practical applications, mixproof valves have been recognized and praised by a large number of users. Whether in food, dairy, medicine, chemical industry or other industries, it can play an excellent role and bring significant benefits to enterprises. Many companies said that the use of mixproof valves in the production process will effectively solve the problem of fluid mixing, and production efficiency and quality will be significantly improved.

Technical Features

• Material: 316L/1.4404, ASME BPE 316L 1.4435 NB2 Fe≤0.5%
• Finish: Ra≤0.8μm;Ra≤0.6μm; MP=Ra≤0.3μm; EP=Ra≤0.3μm
• Connection method: Thread, clamp, welding, flange
• Temperature: -20℃ to +150℃, Depending on the seal material
• Connection standard: DIN SMS ISO IDF RJT BS4825 ASME BPE 3A DIN11864 DIN11853
• Certification: FDA 177.2600; 3A-85-03; Glass II USP Glass VI Chapter 88; GB4806.11; EG VO/1935-2004; PED/97/23/EC.
• Size:1.5"-6" DN40-DN150
• Mininum pressure: vacuum
• Max pressure :6 bar
• Applicable medium:Milk,beer,water,oil and other liquids
• Air pressure:5-7 bar
• Liquid detecting pressure:6 bar
• Air detection pressure:6 bar

• External surface:Satin and sand blasting

• Internal surface:Bright light (polished), Ra < 0.8um 

Cleaning/Sterilization Parts for options

1. Upper and lower steam clenaing/ sterilization +seat lift cleaning

2. The lower stem cleaning/sterilization +seat lift cleaning

3. The umpper stem cleaning/sterilization +seat lift cleaning

4. Seat lift cleaning (Basic)

Pressure balance design selection

A. Upper steam balance

B. Lower steam balance

C. Upper and lower steam balabce

Double seat mixproof valve pressure difference

Product Drawing

Package

By air: carton box

By sea/train:Wooden box

Mixproof valve Project Case

Many anti-mixing valves are used in valve array systems, because the valve has the technical characteristics of online in-situ CIP cleaning, sterilization, self-draining, no dead ends, no retention, etc., and has very flexible configurations such as position feedback devices and valves Automatic control systems such as control units and position sensors.