Aplications
Sanitary double-seat mix-proof valves are used for separating dissimilar products within the same valve body and preventing product contamination from other non-sanitary fluids. They are widely used in various food industries such as wine, dairy and beverage.

Operating Principle
FH6 and FH8 basic sanitary double-seat mix-proof valves are controlled by means of compressed air. The valve is a normally closed (NC) valve.

The sanitary double-seat mix-proof valve has two independent plug seals, forming a leakage chamber between them under atmospheric pressure during ordinary working condition. In case of accident or leakage, the product will flow into the leakage chamber and be discharged through the leakage outlet. This will not cause contamination or mixing. When the valve is open, the leakage chamber is closed. The product can then flow from one pipe to another. The valve can be cleaned by CIP system.

Metal material

Product wetted

316L (DIN-1.4404)

Non-product wetted

304 (DIN-1.4301)

We can provide EN 10204 3.1B certificate.

Seal material

Standard

EPDM

Options

NBR, FPM, Silicone

All seal materials comply with FDA 177.2600.

Temperature

Continuous working temperature

-20°C ~ 135°C (EPDM)

Sterilization temperature

150°C (Max 20min)

Pressure

Working pressure

0~5bar

Meeting high pressure requirement

Control air pressure

6~8bar

Surface treatment

Internal surface

Ra≤0.8µm

External surface

Shot blasting

Connection

Connection standards

Welding end: DIN 11850 series 2

Welding end: Inch pipe diameter standard

Connection methods: welding, thread, clamp, flange

Options

Smart controller

24V DC

Solenoid valve (1 or 3)

Position sensor

24V DC

NPN/PNP position sensor (2 , 3 or 4)